How did the US get to this point in the impeachment process?

President Donald Trump says the House vote to formalize the impeachment process brings "shame" on the chamber. CNN's Alex Marquardt explains how the US got to this point. #CNN #News

latest News,Happening Now,CNN,New Day Weekend,Christi Paul,Kristen Holmes,Victor Blackwell,Alex Marquardt,politics,impeachment,inquiry,impeachment process,Nancy Pelosi,Democrats,President,Donald Trump,