Movie get wrong. Nightly news begins right now. Good evening. Doctors say one in eight women in the u. S. Will develop Breast Cancer and so you would be hardpressed to find a person in this country who doesnt know someone or whose own life hasnt been touched by it. So news today that the rules of Early Detection have changed overnight has created worry and confusion. Here is what happened. The American Cancer Society came out today to say women need fewer mammogram later in life. That is counter to what other groups recommend. Ill put some questions to a doctor in our studio here in a moment. But first Anne Thompson with the new guide lines. Reporter in the season of pink the American Cancer Society moves the mammogram starting line. Instead of age 40. Today it recommends women start at age 45 if they are of average risk, without genetic mutations or a Family History of Breast Cancer. At 55, women should transition to screening every other year if they have a Life Expectancy of ten years or longer. The American Cancer Society said the changes are designed to eliminate false positives and overtreatment. By 45, the benefits clearly outweigh the draw backs and all women should participate in screening. And no longer recommending clinical breast exams at any age. The life saving Early Detection is found in mammography. They can find a cancer before anybody with feel it. But there is disagreement on when to start. A federal Task Force Said it should be age 50. The American College of obstetrics and gynocology is sticking with 40. And one more obstacle for the mobile mammogram unit as they treat women in new york city. Is this going to add to the confusion . Without a doubt. Our women are generally lowincome and low information consumers. So yes, this will be a very difficult thing for them to put their head around. Reporter Early Detection saved marys mother who drove her own van. And amy, at age 40, her first mammogram revealed this mom had an aggressive form of Breast Cancer. It is frustrating for women who want to do the right thing and they are constantly being told something different. Reporter as women and doctors struggle with when to get screens, there may be comfortable in federal law requires most insurance to cover mammograms from age 40 on to protect them from the second deadliest form of cancer. Ann thps, nbc news, new york. And there are a lot of questions about this. Dr. Roshini raj specialized in Womens Health and cancer treatment. Doctor, thank you for being here. Thank you. If a woman wants to get the mammogram at 40, ignore the recommendations and go with the others, what is the harm . There is not a big downsize when you talk about getting it at 40. Some groups are recommending it at 40. However, the new guidelines say 45 may be more reasonable because you are going to have some falsepositives. That means people under 45 going to get the mammogram and they go through tests and anxiety and in the end it is not cancer. So they said start at age 45. But if you want it at 40, you should have the opportunity to get it at 40. What should women do with this information today. Three different groups recommends three different times which means we dont know the exact time for every women. It is an individual choice. Discuss it with your doctor. This is for average risk women. If you have a Family History or a personal history of another type of cancer, talk to your doctor when you should be treated. Thank you. To president ial politics an the Vice President doing nothing to quiet the speculation that continues to swirl around him. If anything he is beginning to sound more like a candidate taking not so veiled swipes at Hillary Clinton today. Meantime, clinton is gaining background she lost, increasing her lead over sanders to a 20 point spread in the new poll. While biden actually lost support, down to 15 . Nbcs Kristen Welker on the new biden versus clinton intrigue. At an event honoring walter mondale, the current Vice President sounded like a president ial candidate. Toad casting himself as the standard bearer of the obama legacy. President obama and i have ideologically have had no disagreement. None. I mean zero. To illustrate the point, biden said he and the president were in lockstep when it came to authorizing the raid against bin laden. And his account differs from the description to nbc news during an interview taped for the 2012 special the situation room. When biden said he urged the president to get more information. I think there is time to do it before you move skblncht biden took a swipe at frontrunner Hillary Clinton for what she said at last weeks debate when asked which enemy shes most proud of. Probably the republicans. I still have a lot of republican friends. I dont think my chief enemy is the republican party. But bidens support concerned about clintons weakness is facing uphill battle. Clinton is gaining strength and now 38 of democrats say they dont want bide tone get in. They feel like they are frozen in place until the Vice President makes his decision and that is not helpful for the party. Long time supporter of clinton said he will support whoever the democrats nominate but was blunt about biden. Just make up your mind. You deserve to take a shot here. Reporter and laster, as solid as the poll is, there is a significant weakness for Hillary Clinton. 44 of americans are not satisfied with her response to the benghazi attacks and only 27 say they are. That makes thursday critical for her as she testified before the Congressional Committee investigating that matter. Lester. Kristin, thanks. On the republican side of the royce, donald trump is the frontrunner. But due to the margin of error, ben carson is in a dead heat for the lead. Carsons unorthodox approach continues to connect with voters. Even as Hallie Jackson tells us he takes time from his campaign to promote a new book. Reporter ben carson today cranking out snapshots on an autograph assemble line. Not a political rally, but a book tour, the doctor and author, long before a politician, ramping down campaign events, yet still surging. Nearly three quarters of republicans now say they could see them voting for the first time candidate. His candidacy is a mystery for most people. He is nontraditional and gives nontraditional answers in nontraditional ways. Spending his cash fast has been fueled by his comments on gun control and the holocaust and muslim americans. I would not advocate that we put a muslim in dharj of this nation. His remarks mischaracterized he said by the media. But he can use a different platform to get his message out facebook. Where he has more likes than any other gop candidate. And that may not seem like a big deal, but a single post on his page do reach 4. 3 million people, nearly as many as the population of iowa and New Hampshire combined. Im never going to be a politician. So im not going to use their playbook. Reporter and while he isnt a typical politician, he is trying to organize like one. In key states like iowa, where the Seventh Day Adventist looks strong among evangelicals and that could be a problem for others arguing for faith based voters like ted cruz, who is taking fire from bush who took told a group of donors he doesnt like the senator. And that could work for cruz who is fighting against bush if what is still a race the outsiders own, despite pundit predictions. Hallie jackson, washington. The u. S. President ial campaign has been underway for months and still has more than a year to go. But canada has just chosen a new leadner a campaign that lasted a mere 11 weeks and that is long for them. The winner in an upset is a 43yearold justin trudeau. One with a legendary name and he promises big changes. Nbcs Gabe Guiterrez has his story. I have a simple message for you. On behalf of 35 million canadians, were back. Justin trudeau is canadas future and the past. The son of pierre and margaret, the charismatic former Prime Minister and flower child bride. This glamorous power couple in the 70s and 80s. Justin grew up in that spotlight. And last night claimed it for himself. His liberal Party Winning a stunning upset. It is time for a change in this country, my friends. A real change. Trudeau is 43, married to a former Television Host and model. He got into politics just eight years ago after trying his hand as a snowboard instructor, a nightclub bouncer and a high school teacher. His critics called his resume thin. But he insisted he was ready and the voters agreed. Sending conservativin couple bent Stephen Harper packing. And he promises to cut taxes ab spend billions to boost the economy, legalize marijuana and lead the u. S. Led air campaign against isis in iraq and syria. Why should Americans Care about canadian politics . We now have a canadian government that is politically more in line with the American Government z. That mean better relations. Relations have been good but they have not been so great of late. Will they now get better . That is why americans should care. A familiar old name and perhaps a little Northern Star power. Dave guiterrez, nbc news, montreal. Now to a growing controversy in south florida surrounding the church death of a musician. He pulled over with car trouble in the middle of the night and that led to aen count we are a Plain Clothe Police officer. Now his family is demanding answers. We get more from nbcs mark potter. Reporter 31 year cory jones was a wellknown drummer who played in churches and in a local band preparing for a national tour. Police say he was killed at 3 15 sunday morning along an exit ramp for interstate 95 where friends say he was waiting for a tow truck because of car trouble. The Palm Beach GardensPolice Department said one of the officers, newman raja, drove up in an unmarked car and plain clothes. As the officer exited his vehicle, he was suddenly confronted by an armed subject. As a result of the confrontation, the officer discharged his firearm, resulting in the death of mr. Cory jones. Police say they found a handgun jones purchased three days before the incident. I cant explain it. It just hurts. They lost an amazing person. A really special hume ab being. His family and friends are shocked by the Police Account of the shooting, saying jones was nonviolent. I plead to that individual that he will be accountable for what he has done. Reporter jones worked for the dell way Beach Housing Authority as an in spector. He was a good person. A good soul. A good human being. His family hired an attorney known for his work in previous highprofile Police Shooting cases. Officer raja joins the Palm Beach GardensPolice Department after serving eight years in atlanta, florida, where the chief said he was in good standing. Raja is on paid leave as the Palm Beach Sheriffs Office investigates the shooting. Mark potter, nbc news, miami. Dangerous weather tore through the southwest causing flooding in Central Arizona that trapped a woman in mer minivan north of phoenix. A rescue crew waded into the fastmoving water and was able to pull her to safety. A number of funnel crowds are reporting around the phoenix area and to the north, flagstaff got pelted with hail, almost looks like snow blanketing the area in that picture. Still ahead, how well do american cars stack up against the foreign counterparts when it comes to reliability and where does your car sit. Surprises in the new annual report. What you need to know. Also the hairrising flight to the sky streaked cole alright, now that we have merged with cableworld, we are so excited to hear your big ideas on how were going to take on directv. So over to you. newhart thank you. Full disclosure. We forgot to come up with ideas. cw exec yeah, we got messed up last night. Youre lucky were even here. newhart but, we did bring breakfast. jmh bagels . newhart nope. woman oh my goodness. newhart peel and eat shrimp. cole not how i would have gone but its good, its innovative. And thats what we want here. vo get rid of cable and switch to directv. Call 1800directv. And sleep deprived. Bring us those who want to feel well rested. Aleve pm. The only one to combine a sleep aid. Plus the 12 hour pain relieving strength of aleve. Be a morning person again with aleve pm. I brto get us moving. Tein im new ensure active high protein. I help you recharge with Nutritious Energy and strength. Ill take that. Yeeeeeah new ensure active high protein. 16 grams of protein and 23 vitamins and minerals. Ensure. Take life in. Called squamous nonsmallced luncell,er previously treated with platinumbased chemotherapy, its not every day something this big comes along. A chance to live longer. With opdivo, nivolumab. Opdivo is the first and only immunotherapy fda approved based on a Clinical Trial demonstrating longer life for these patients. In fact, opdivo significantly increased the chance of living longer versus chemotherapy. Opdivo is different. It works with your immune system. Opdivo can cause your immune system to attack normal organs and tissues in your body and affect how they work. This may happen any time during or after treatment has ended, and may become serious and lead to death. See your doctor right away if you experience new or worsening cough; chest pain; shortness of breath; diarrhea; severe stomach pain or tenderness; severe nausea or vomiting; loss of appetite; swollen ankles; extreme fatigue; constipation; rash; or muscle or joint pain, as this may keep these problems from becoming more serious. These are not all the possible side effects of opdivo. Tell your doctor about all your medical conditions including immune system problems or if youve had an organ transplant, or lung, breathing or liver problems. A chance to live longer. Ask your doctor if opdivo is right for you. Bristolmyers squibb thanks the patients and physicians who participated in the opdivo Clinical Trial. So how is your car running. There was a time we measured Car Reliability mostly by what was happening under the hood. But packing cars with new technology has not only offered new futures and new headaches as reflected in todays release of the most highly watched and respected annual auto survey. Tom costello now with how todays models stack up, including some surprises. Reporter the list is compiled from 740,000 Consumer Reports subscribers. Detailing how reliable their existing cars are. But new technology on the dashboard and in the transmissions is proving to be a hang yif up for several bignamed automatics. Technology is moving very quickly and much faster than the Car Manufacturers are keep up. Sometimes the life cycle of the car is seven years. If you have a smartphone that is seven years old, it is basically garbage. Starting with toyota and lexus on top, followed by audi, mazda and subaru and kia and the only american buick. Kia even surpassed honda and acura. Among the least reliable vehicles on the list, lincoln, ford, acura, gmc and chevrolet. At fiat chrysler, the struggles continue it. Produced five of the worst seven brands. This brand, jeep and fiat, the bottom three among the subscribers. Transmission issues the biggest complaint. But here is the interesting point. Jeep rated as the second worst brand when it comes to reliability and yet because of the styling, because of the marketing and because of the look of the jeep models that are being sold right now, sales have never been stronger. The stunner, tesla. The car Consumer Reports called the best car it ever tested gets a worst than average reliability score. Tesla said its Technology Allows it to Fix Software Bugs in the cars remotely. Fiat, ford, gm and acura tell nbc news they are listening to the customers and working to improve. Tomcott, nbc news, washington. We have much more information about the report auto rankings on our website, nbc news. Com. 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