House Speaker Nancy Pelosi on Tuesday afternoon announced plans to launch formal impeachment proceedings against President Donald Trump. In recent days, a growing number of Democrats have argued that Trump’s efforts to pressure Ukrainian leaders to investigate former Vice President Joe Biden and his son could be grounds for removing the president from office. “This is a violation of his constitutional responsibility,” Pelosi said in televised remarks on Tuesday evening, accusing Trump of betraying his oath of office. “This is a violation of law." Washington DC bureau chief David Corn, and foreign influence and national security reporter Dan Friedman join host Jamilah King to discuss how a secret whistleblower complaint against Donald Trump rapidly transformed from a trickle of news into a full blown torrent that finally broke the dam. Learn about your ad choices: dovetail.prx.org/ad-choices