Reveal late momentum before this crucial primary. Abcs tom llamas is live in South Carolina to lead us off tonight. Tom . Reporter david, good evening to you tonight. Donald trump loves to brag about those polls, but tonight, he wont be bragging about that latest National Poll, which for the first time in months shows hes not on top. And tonight, his troubles dont end there. Help me welcome the next president of the united states. Lets go to the polls on saturday and move that down the way, marco rubio reporter tonight, South Carolina governor nikki haley standing with senator marco rubio and against donald trump. Every day is a great day in South Carolina. Ladies and gentlemen, if we elect marco rubio, every day will be a great day in america. I am so honored that she chose to join our team, because she embodies for me everything that i want the Republican Party and the conservative movement to be about. Reporter donald trump tonight didnt even mention the endorsement. So saturday, get out and vote. Reporter Governor Haley, who has an 81 approval among South Carolina republicans, has been sounding the alarm on trump for months. Just yesterday, saying trump was out of line to knock president bush over his handling of 9 11. Its unfortunate. You know, i took my daughter to her first debate on saturday, and i mean, i was embarrassed to see a candidate criticize a president on one of the worst days that weve had in american history, and criticize the way this president handled it. Reporter all South Carolinas key republicans players, now lining up against trump. Haley and senator tim scott with rubio. Senator Lindsey Graham in jeb bushs camp. Today, trashing the billionaire. I think hes crazy. I think hes unfit for office. Reporter trump says grahams the crazy one. Little thimble. Boom. This guy let me tell you, this guy knows nothing. Reporter and now, trump taking on senator ted cruz, the candidate who could be his toughest competition. And for the first time in many months, theres a new national frontrunner on the republican side. Reporter trumps lawyers sending cruzs campaign a cease and desist letter over this ad. I am pro choice in every respect. We cannot trust donald trump. Reporter trump claiming the ad is replete with outright lies, false, defamatory and destructive statements. In the annals of frivolous lawsuits, this takes the cake. Reporter but cruz, a battletested lawyer, says hes ready. One of the things i look forward to most of all is deposing donald trump. I make take the deposition myself. And tom llamas back with us live. Tom, i want to get back to that key endorsement moments ago from governor nikki haley. Former president george w. Bush met with her in recent days, clearly pushing for an endorsement of his brother, jeb. Reporter yes, there is, david. Tonight, jeb says hes disappointed. That Governor Haley is a good person and a good governor. And hes trying to spin the news in a positive way, saying that when he wins the nomination, she will have a role in his campaign. But the bad news doesnt end there for jeb, david. Tonight, the new National Poll has jeb bush at 4 . David . Tom llamas leading us off again tonight. Tom, thank you. And there are also breaking developments on the democratic side tonight. New numbers in nevada showing a neck and neck battle. Hillary clinton and Bernie Sanders, tied. Clinton at 48 , sanders at 47 . She does lead in South Carolina, but her campaign is well aware of the new National Poll tonight, as well. Which could spell a long and difficult battle ahead. Hillary clinton now leading Bernie Sanders by just two points nationally. Secretary clinton had a 31point lead nationally just two months ago. And tonight, a revealing quote from clinton herself about her weakness on the campaign trail. Im one of those mothers who met with her and was able to make it through. Reporter Hillary Clinton today, standing with the tearful mother of sandra bland, the chicago woman whos death in a jail cell sparked outrage. We need to face the reality of systemic racism. Reporter clinton and Bernie Sanders trying to woo minority voters. From the campaign trail what we have got to do is bring justice back to the criminal justice system. Reporter to the airwaves Bernie Sanders. [ speaking Foreign Language ] Hillary Clinton. [ speaking Foreign Language ] reporter clintons now facing the possibility she could lose nevada, too. Today, we went to her brooklyn headquarters to speak with her campaign manager. We always anticipated that this would be a very close contest. Reporter but what is Bernie Sanders doing in nevada that you are not . I dont know. Youd have to ask him what hes doing. We are executing on our strategy. Reporter a strategy that involves thousands of volunteers now focused on getting voters to clinton herself, now featured in vogue, revealing this im great at advocating for other people, but im not so good at really promoting myself. I just find it hard to do. And cecilia vega with us live tonight. Cecilia, we know they flipped coins in some precincts during the iowa caucuses, because the race between clinton and sanders was so close. New word tonight how they break a tie in nevada . Reporter david, with a deck of cards. A new pack will be distributed to every single precinct. They come with strict rules. They have to be shuffled seven times before they can be used. If theres a tie, theres a draw. The highest card wins. Out is, after all, nevada, david. Flipping coins and now decks of cards. Cecilia, thank you. We move on tonight, to what will be a major issue in this president ial race, has been already. The battle tonight between the fbi and apple. Months after the terror attack in San Bernardino, the fbi is desperate to break into the iphone used by the gunman. And now, a judge is agreeing, demanding apple help the fbi break through the encryption on the phone. Precedent. And just a short time ago, the Justice Department releasing a statement, saying, quote, it is unfortunate that apple continues to refuse to assist the department. Abcs senior justice correspondent Pierre Thomas tonight on both sides. Reporter tonight, the fbi and apple in a titanic clash between personal privacy and national security. Need assist now. I have shots fired. Reporter since the bloody end of the San Bernadino attack, the deadliest since 9 11, the fbi has been helplessly staring at syed farooks cell phone, an iphone 5c like this one. We still have one of those killers phones that we have not been able to open. Its been over two months now. Reporter a federal judge now siding with the fbi, ordering apple to find a way to hack into the iphone used by farook. Tonight, apple is refusing, saying if they break into the phone, it will set up a dangerous slippery slope. If you design a backdoor for one phone, you have to design it for all phones. Reporter the fbi suspects the phone may hold critical communicating with, and where he and his wife, tashfeen malik, may have traveled. The problem . They dont have farooks fourdigit password. The fbi believes that farook used apples security option, basically a selfdestruct mechanism, that renders all data on the phone permanently inaccessible if the proper code isnt entered after ten tries. But with 10,000 unique possibilities, the fbi knows cracking the code is nearly impossible in just ten tries, and so it wants apple engineers to Design Software to break into the phone. In an impassioned statement, ceo tim cook said, the government is asking apple to hack its own users, adding that the software is, quote, something we simply do not have and something we consider too dangerous to create. Cook expressing those same concerns recently on 60 minutes. There have been people that suggest we should have a backdoor, but the reality is, if you put a backdoor in, that good guys and bad guys. Its not about us getting a backdoor. I dont want a door, i dont want a window, i dont want a sliding glass door. I would like people to comply with court orders. Reporter the fight exploded on social media today, with president ial candidates weighing in. Who do they think they are . No, we have to open it up. Reporter but apple is Standing Firm tonight, arguing, if they found a way to break into that phone, theyll be able to break into any phone, which could put the private data of millions of users at stake. And Pierre Thomas with us live from the fbi tonight. And pierre, you were telling us, this battle could effect far more than just the San Bernardino case, when it comes to unlocking iphones . Reporter thats right, david. Manhattans chief prosecutor tells us, he alone is trying to open more than 150 encrypted iphones, in cases ranging from murder to sex crimes and robbery. Its an epic legal battle that could go all the way to the supreme court. David . All right, Pierre Thomas with us live tonight. Pierre, thank you. Now, to pope francis this evening, and his historic visit to mexico. These images coming in just moments ago here of the pope at crowds gathered. That visit to the mexico u. S. Border, making headlines in the president ial race here in this country. Donald trump saying the pope does not understand the danger of an open border. Abcs chief Foreign Correspondent terry moran with the pope. Plus, the moment pope francis was visibly upset with crowds, pulling him toward them. Reporter he stood on the banks of the rio grande, head bowed in silent prayer, here at this troubled border. Across the river, a few feet away in the united states, americans, including some undocumented immigrants, praying with francis, remembering the thousands who have died in the desert, trying to get to the u. S. Spiritually, there was no border here today. Joyous crowds on both sides, in juarez and in el paso, a hugely symbolic celebration, a message from the pope. This week, donald trump sent a message back, in an interview with fox business. The pope is a very political person. We have with mexico. Reporter but mexico has embraced this pope. At one point yesterday, mobbing him, almost toppling him until he rebuked them. Dont be selfish, he said. And at every step, francis has spoken out, blasting some businesses as slave drivers that exploit employees. And especially taking on the violence of the drug trade here in this city, once racked by thousands of murders. But now, juarez, with crime down to manageable levels, proudly hosting the pope. For francis, this isnt about politics. Its about taking in the stranger and welcoming in the refugee. He would say, thats christianity. David . Terry moran with us tonight from mexico. Terry, thank you. And overseas tonight, and to a deadly terror attack in turkey. At least 28 People Killed in a car bomb explosion, in that countrys capital. The blast apparently targeting Turkish Military buses. The u. S. Embassy nearby. Turkish officials calling the attack well planned. No one claiming responsibility and to a developing story involving the Los Angeles Police department. Two officers under arrest sexual assaults on four women while on duty. The alleged attacks taking place over the course of several prosecutors saying some of those attacks took place in their police cruiser. The officers are scheduled to be arraigned tomorrow. And in South Carolina tonight, newly released video showing the terrifying moments faced by police, who were trying to arrest a suspect. That suspect pulling out a gun and opening fire. What those officers do in the moments that followed. Abcs Clayton Sandell with the images tonight. Reporter what looks routine is about to turn deadly. Okay, just relax. Just relax. Reporter a Police Sergeant in cayce, South Carolina, questioning 21yearold Demetrius Bryant over marijuana and an expired car registration. Listen to me. Listen to me. This is a little misdemeanor, okay . Reporter but then bryant pulls a gun, shooting an officer the sergeant fires back. Shots fired shots fired reporter and kills bryant. Suspect down. Reporter the shootout captured on police cameras, now becoming as common as flashlights. Today, 76 of all departments use some type of camera. Then, there is citizen video. Recording moments like last year, when another South Carolina officer shot and killed walter scott as he ran away. That officer now charged with murder. Cameras cut both ways. They either can justify someones behavior or not. Weve seen plenty of Police Shootings in recent past where they showed bad police behavior. Reporter with the help of this video, this week, both officers were cleared and are now back to work. Clayton sandell, abc news, denver. Clayton, thank you. And the new headline tonight in flint, michigan. It turns out, residents are paying the highest water rates in the country for that leadcontaminated water. Residents paying 864 a year. Thats nearly double the national average. A 30 million bill now in congress to help families pay their water bills. There is still much more ahead on world news tonight this wednesday. And we have breaking news. New developments in that mansion murder case making national headlines. The family found killed in their home. Theres news tonight about the suspect charged. Also, the collision on the tarmac. The passenger jets clipping wings in detroit, and well have details. And our cameras right there tonight. The alleged imposter, accused of posing as a doctor for more than a month, examining patients. Youre about to see the sting, right here, after the break. Song thats life song thats life thats life. You diet. You exercise. And if you still need help lowering your blood sugar. This is jardiance. Along with diet and exercise, jardiance works around the clock to lower blood sugar in adults with type 2 diabetes. It works by helping your body to get rid of some of the sugar it doesnt need through urination. This can help you lower blood sugar and a1c. And although its not for weight loss or lowering systolic Blood Pressure, jardiance could help with both. Jardiance can cause serious side effects including dehydration. This may cause you to feel dizzy, faint or lightheaded, or weak upon standing. Other side effects are genital yeast infections, urinary tract infections, changes in urination, kidney problems, and increased bad cholesterol. Do not take jardiance if you are on dialysis or have severe kidney problems. Stop taking jardiance and call your doctor right away if you have symptoms of an allergic reaction. Symptoms may include rash, swelling, and difficulty breathing or swallowing. Taking jardiance with a sulfonylurea or insulin may cause low blood sugar. Tell your doctor about all the medicines you take so talk to your doctor, and for details, visit jardiance. Com. bear growls burke smash and grub. Seen it. Covered it. We know a thing or two because weve seen a thing or two. We are farmers. Bumpadum, bumbumbumbum were going to turn next tonight to the alleged imposter, the teenager accused of posing as a doctor for more than a month, examining patients. No one stopped him. Tonight, abcs station wpbf, right there for the sting, and heres abcs matt gutman. Reporter he had the lab coat and the stethoscope. They say youve been license . Reporter but what police say this selfdeclared florida doctor lacked . A medical license. Just 18, malachi love robinson, was charged with seven counts overnight, including grand theft and fraud for allegedly practicing without a license. Our West Palm Beach station wpbf was right there when he was arrested tuesday. Im hurt because of the accusations and the allegations. Reporter last month, he proudly offered this tour of his office. This is the new birth and life medical center. Reporter saying he never claimed to be an md. But wpbf peeled back the tape on this sign, revealing those very letters. So many physicians, they speak to me and they are just in awe. And its not because im a great person, not because im some miracle from heaven sent, its just because i have a fashion for helping people. Reporter including an undercover sheriffs deputy. Another patient, an 86yearold, claims he treated her for severe stomach pain. Paying him nearly 3,500. His website says he treats people with phototherapy, as well as water, food and air. Hospital. He told me that he was a dr. Robinson. Reporter st. Marys said he never came in contact with charged. Matt, thank you. And tomorrow morning, that teenager, exclusively on good morning america, answering the charges. When we come back here tonight, the mansion murder case making national headlines. News tonight about the suspect. Also, take a look at this. A cargo ship running aground. The moment everyone realizes that ship there isnt going to stop. And then, tonight, beyonce now being blamed by a sheriff here in america for his communitys spike in violence. Well be right back. My man, lemme guess who youre wearing. Toenail fungus . Whaaat . . Fight it with jublia. Jublia is a prescription medicine. Used to treat toenail fungus. Use jublia as instructed by your doctor. 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