As the latest american ebola victim has arrived in this country for treatment, a young man who happens to be a member of our extended nbc news family. Late today the president said the u. S. Is considering adding additional screening measures at some u. S. Airports. Major ports of entry for travelers arriving from west africa. Nbc news has learned those efforts would likely include cdc personnel at newark, jfk, chicago and washington dulles airports asking passengers about their travel history and taking temperatures. First tonight and out of immediate concern the latest american to arrive, the second ebola patient now taken to nebraska for treatment. Tonight, our National Correspondent kate snow is there to start us off. Kate, good evening. Reporter good evening, brian. Ashoka mukpo was working with dr. Nancy snydermans team on the ground as a freelance cameraman in liberia. Doctors said his symptoms do seem to be getting worse, with that said hes also in the early stages of what is a very dangerous disease. The plane touched down in nebraska at dawn, a more than 16hour journey on a especially equipped jet. Ashoka mukpo walked off the plane and got onto a gurney. Paramedics and hazmat rode with him to the nearby nebraska medical center. How is he feeling . I think hes doing pretty good. I think he was thinking about something he might like to eat for lunch. Reporter real food . Real food. Reporter his parents and girlfriend of four years were thrilled to see ashoka through a video chat, but they cant get close. Heart wrenching. I mean, when you have a loved one who is as sick as he is, you want to curl up next to them and tell them youre going to be okay and be close to them and obviously you cant do that. It is a little bit hard. Reporter helen lived with him in liberia for two years. Ashoka returned on his own this fall to do human rights work and journalism on the side. His parents begged him not to return. He said, mom, im going tomorrow. Reporter what did he say . I said im so worried youre going to get ebola. Reporter no one knows how or when he became infected, but given what he witnessed in liberia, his family says hes afraid. He knows how bad it can get, which is making him very scared i think. Do you think hes scared he might die . Yes, he is. Hes seen many, many people die from this. His mind goes there. Reporter his father says ashoka will receive an experimental treatment. But theyre still determining which one. In dallas the hospital treating ebola patient Thomas Eric Duncan is already receiving an experimental drug. Duncan remains in critical condition. Of the 48 people the cdc is watching in dallas, none have exhibited symptoms. We take temperatures two times every day and weve got zero symptoms out there. Okay. Zero. And that is a good sign. Reporter meantime, dr. Nancy snyderman and her team are also monitoring themselves. And they so far are feeling fine. Plans are underway for their return to the u. S. Brian. Kate snow starting us off from omaha tonight. Kate, thanks. All of this concern about ebola has served as a wakeup call to hospitals, Health Departments across this country determined not to repeat any of the mistakes we saw made in dallas. We get that end of the story now from nbcs tom costello. Reporter on the front lines of the nations emergency medical system from ambulances to hospitals, clinics to laboratories, ebola has suddenly taken on added urgency. In new york 911 dispatchers are now asking if theyve been to west africa. This will allow us to get a heads up if someone possibly has been exposed to the ebola virus. Reporter in metro chicago, Cook County Health and hospitals have sent this notice to ers, emts and labs on evaluating patients for ebola. For months the cdc has been sending ebola symptom flowcharts to 5,000 hospitals nationwide. Now with the dallas case in the news, ebola is suddenly very real. We are hearing from, for example, different clinical groups this week that they dont really feel prepared. They have more questions. They have concerns. Reporter there is confusion at Newark Airport this weekend as passengers on a united flight from brussels were kept on board for two hours as the cdc responded to a man with ebolalike symptoms. They clearly were frankly made it up as they went along. Reporter were you concerned at any point this was something more serious . No. Just thought it was incompetent. Reporter thankfully no eb a ebola. But the cdc is watching several cities with large west african populations. Los angeles, dallas, minneapolis, washington, philly, new york. Including a patient at Howard University hospital last week who was quickly assessed and cleared. The chief medical officer says shes more worried about flu season than ebola. There are thousands of patients who die every year of influenza. But we dont have the same kind of concerns about the influenza that we have about ebola. Reporter since july 14th hospitals nationwide have reported 135 instances to the cdc of people thought to be potential ebola patients because of their symptoms and their travel histories. 40 of those in just the last week. But so far only the dallas case has proven to be the real thing, brian. Tom costello from our d. C. Newsroom tonight. Tom, thanks. Now to another big story were covering, the surprise decision at the Supreme Court where the justices declined to hear any of the challenges before them regarding individual state bans on samesex marriage. This paves the way for samesex marriage in a lot more states while the court refused to settle the issue for the entire country once and for all. We get our report tonight from our justice correspondent pete williams. Dearly beloved, we have gathered together to join this woman and this woman reporter less than four hours after word came from the Supreme Court, gay couples were getting marriage licenses in virginia. You may kiss your bride. Came up crying and said i think we can get married today. A new day has dawned. And the rights guaranteed by our constitution are shining through. Reporter similar scenes in four other states where federal courts had struck down bans on samesex marriage. Those rulings had been on hold until the Supreme Court said today it would not rule on those lawsuits. Its almost shocking. Everyone expected given the importance of the issues that the justices would step in and hear these cases now. Reporter samesex marriage was already legal in 19 states. Todays Supreme Court action lifts the holds on Lower Court Rulings that had struck down gay marriage bans in the five states that appealed. Those same appeals Court Rulings were also binding on six other states in the affected federal circuits, colorado, kansas, wyoming, north and South Carolina and west virginia. So now samesex marriage is or very soon will be legal in 30 states. Opponents of samesex marriage were disappointed and said they hope the justices will eventually take up the issue. The Supreme Court should continue to respect the right of the people and the right of the states to affirm marriage as they so choose. Reporter but gay rights advocates say as more states permit samesex marriages, it becomes harder for the court to later put a stop to them. I dont think this Supreme Court any Supreme Court is willing to say to people who are married, sorry, youre not married anymore. Just kidding. Reporter the issue could come back here if a federal Appeals Court rules that states can ban samesex marriage. But that would push the issue off for at least another year while in the meantime the Supreme Court lets those marriages continue. Brian. Pete williams at the Supreme Court for us tonight. Pete, thanks. We turn now to the battle against isis overseas. An american citizen is under arrest tonight here accused of wanting to travel to syria to join isis. This just days after isis threatened to kill an american hostage. Authorities stopped this young man, a teenager, in chicago as he prepared to board a plane to istanbul. Our chief Foreign CorrespondentRichard Engel is there tonight and has our report. Reporter hes the latest american accused of trying to join isis. 19yearold Mohammed Hamzah khan from suburban chicago in federal court today. He was arrested saturday at ohare about to board a flight to istanbul. According to a federal criminal complaint his residence was searched after his arrest and authorities found documents that express support for isil and disgust at western society describing it as filth. Also found, a threepage letter to his parents saying he was on his way to syria to join isis. First and foremost, please make sure to not tell the authorities, he wrote, according to the complaint. Already in syria now is another american, a hostage isis is threatening to kill. Peter kassig, a former soldier who went to syria to help victims of war, converted to islam and changed his name. His parents offered a desperate plea for his release. We implore those who are holding you to show mercy and use their power to let you go. Reporter but isis is showing no mercy. They want to escalate this conflict and draw in other nations, especially turkey. After days of fighting, isis militants stormed into the syrian city of kobani. So close to the Turkish Border that when they wave their black flag, turkish troops could see it. Today, turkey sent more tanks and troops to reinforce the border. So far the turkey troops have not crossed into syria. Isis wants to widen this war, hoping it will become a quagmire that will swallow its enemies. And late word, brian, that kobani is falling to isis. This is a big gain for isis. And its an enormous problem for this country because already tonight clashes and riots have broken out with protesters saying turkey didnt do enough to save kobani. Brian. Richard engel watching it all from turkey tonight. Richard, thanks. In this country the u. S. Secret service has a new boss, at least for now. Joe clancy was swornin today as interim director five days after Julia Pierson stepped down as the head of the agency after a series of security lapses. This is a return engagement for clancy who was a ubiquitous presence at the president s side as head of the president ial protection detail before his retirement in 2011. Michael phelps, the most decorated olympian in history will not be able to swim competitively until march of next year. Hes been suspended from the sport for six months after a second arrest for dui in baltimore last week. Over the weekend phelps announced he would enter a sixweek treatment program. Still ahead for us on a monday night, news about a mysterious virus striking so many children now taken the life of a 4yearold boy. Tonight, the advice for parents. And later, an unbelievable crash and equally unbelievable outcome. I got this. [thinking] is it that time . The son picks up the check . [thinking] im still working. Hes retired. I hope hes saving. I hope he saved enough. Who matters most to you says the most about you. At massmutual were owned by our policyowners, and they matter most to us. Whether youre just starting your 401 k or you are ready for retirement, well help you get there. And tkind of like you huffing sometimes, grandpa. Well, when you have copd, it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbicort is for copd, including chronic bronchitis and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. Medicines like formoterol increase the risk of death from asthma problems. Symbicort may increase your risk of lung infections, osteoporosis, and some eye problems. You should tell your doctor if you have a heart condition or high Blood Pressure before taking it. Grandfather symbicort could mean a day with better breathing. Watch out, piggies child giggles doctor symbicort. Breathe better starting within 5 minutes. Call or go online to learn more about a free prescription offer. If you cant afford your medication, astrazeneca may be able to help. Before we craft it into a sandwich. The amazingly tender roasted turkey always raised without antibiotics, the zesty cranberry mostarda, the freshly baked flatbread. But heres what you dont always see. The care and attention that goes into it. Because what matters most is the simple, delicious ingredients that make up the whole delicious meal made just for you. And this is our turkey cranberry flatbread sandwich, paired perfectly with our autumn squash soup. Only at panera bread. Its a virus raising concern throughout the nation, but its not ebola. It may its a virus raising concern throughout the nation, but its not ebola. It may in fact pose an even larger threat in the u. S. Its called enterovirus d68 and has put hundreds of children in the hospital. Its effects are mysteous, but it has not proven deadly until now. We get the details tonight from nbcs rehema ellis. Reporter 4yearold eli waller was adorable. His father described him as a little boy full of unconditional love. He missed a day of school in hamilton township, new jersey, two weeks ago for pink eye but died suddenly in his sleep that night. This weekend officials ruled elis cause of death enterovirus d68. Its the first death directly linked to the virus that has infected more than 500 patients in 43 states and d. C. Since august. Several clusters of children have been hospitalized with symptoms of the virus that cause respiratory difficulties. Today in colorado authorities reported a 12th patient with symptoms that include partial paralysis. Doctors dont know if its temporary or permanent. In elis hometown concern is growing. Tabitha is worried about her 4yearold son, tested for the enterovirus, hes been out of school for three weeks. Were working on getting better. Still on rounds of steroids. Reporter precautions are being taken. Ive seen him sanitized. We were at both meetings and im confident that everybodys going to be okay. Reporter while theres no vaccine against the virus, Health Officials urge families to get the flu shot to prevent the risks. Having two viruses at the same time may be cause for concern. Sometimes it makes it hard in terms of diagnostics in identifying what is actually causing the symptoms. Reporter this hamilton Pediatrics Office has been flooded with calls from parents who are being extra cautious. In the area now. Before it was, you know, a little further away. But now its a reality. Reporter experts say a top concern is trying to figure out whats making these children sick. And Doctors Point out were in the middle of flu season, so its important to thoroughly wash your hands often. And if your children appear sick, keep them home. Brian. A sad story to be covering. Rehema ellis in suburban, new jersey tonight. Thanks. Were back in a moment with the amazing thing a Police Officer did after pulling over a woman and her child as opposed to writing them a ticket. R pulla woman and her child as opposed to writing them a ticket. Ase is, but ive managed. Except that managing my symptoms was all i was doing. And when i finally told my doctor, he said humira is for adults like me who have tried other medications but still experience the symptoms of moderate to severe crohns disease. And that in clinical studies, the majority of patients on humira saw significant symptom relief. And many achieved remission. Humira can lower your ability to fight infections, including tuberculosis. Serious, sometimes fatal infections and cancers, including lymphoma, have happened; as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. Before treatment, get tested for tb. 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A jewel of new york city is being sold to the chinese, the waldorfastoria, just under 2 billion. The park avenue landmark has always been the place where president s stay when in new york. Herbert hoover and General Macarthur lived there through old age. Its still home to the u. S. Ambassador to the u. N. Conrad hilton himself