Now playing Next USA Biden said he was prepared for Trump attacks, but now he's struggling to respond The president's attacks on the Democratic frontrunner are threatening his campaign at an already perilous moment. 06/10/2019
Now playing Next USA Trump allies respond to second whistleblower: 'Why should I care?' Republicans also said Trump was not serious when he suggested that China look into former Vice President Joe Biden and his son Hunter. 06/10/2019
Now playing Next USA Second whistleblower comes forward in Trump-Ukraine scandal The first whistleblower complaint about President Donald Trump's phone call with the Ukrainian president led to Democrats' impeachment inquiry. 06/10/2019
Now playing Next USA Bernie Sanders to go home Saturday as he recovers from heart attack The 78-year-old senator was hospitalized Tuesday in Nevada after experiencing chest pains. 05/10/2019
Now playing Next USA Clinton kept his party with him to stop impeachment. Trump's approach is different. Analysis: The 42nd president showed contrition. The current Oval Office occupant rarely does. 05/10/2019
Now playing Next USA Bernie Sanders had a heart attack this week, campaign says Doctors diagnosed Sanders, 78, with a myocardial infarction, a medical term for heart attack. 05/10/2019
Now playing Next USA Abortion rights advocates, doctors take aim at uptick in 'reversal' laws Six states require that doctors inform their patients that a medication abortion can be reversed, and a number of others have passed or are considering such laws. 04/10/2019
Now playing Next USA CIA's top lawyer made criminal referral on whistleblower's complaint about Trump conduct Experts are raising questions about why the Justice Department did not open an investigation. 04/10/2019
Now playing Next USA Volker sought to distance himself from Trump efforts in Hill testimony In a statement ahead of Thursday's testimony, the U.S. special envoy to Ukraine said he was unaware of Trump's requests for an investigation of the Bidens. 04/10/2019
Now playing Next France Watch: Tetraplegic man walks again thanks to mind-reading exoskeleton The technology represents a scientific breakthrough that could bring hope to tetraplegics seeking to regain movement. 04/10/2019
Now playing Next USA Intelligence community watchdog testifies behind closed doors in impeachment inquiry The inspector general, Michael Atkinson, had deemed the whistleblower complaint at the center of the impeachment inquiry an "urgent concern." 04/10/2019
Now playing Next USA 'Wrong and appalling': Romney blasts Trump for calling on China to probe Bidens Romney and Sasse are the first sitting Republican senators to publicly condemn Trump's remarks. 04/10/2019
Now playing Next Ukraine Ukraine to review cases linked to firm that employed Biden's son It is the first concrete sign of how Ukraine plans to handle investigations that are being closely watched in Washington amid possible impeachment of Donald Trump. 04/10/2019
Now playing Next USA Supreme Court to take up Louisiana law requiring abortion doctors to have admitting privileges The law would leave only a single doctor to perform abortions in the entire state, women's groups say. 04/10/2019
Now playing Next USA Diplomats' text messages provide powerful evidence for impeachment First Read is your briefing from "Meet the Press" and the NBC Political Unit on the day's most important political stories and why they matter. 04/10/2019
Now playing Next USA Texts reveal US diplomats pushed for Ukranian investigation The US House Intelligence Committee released text messages between a Zelensky aide and US diplomats 04/10/2019
Now playing Next USA Ambassadors pushed Ukraine to investigate as condition for White House visit, texts show House Democrats released the messages that were turned over by former U.S. envoy to Ukraine Kurt Volker amid impeachment inquiry. 04/10/2019