Ninety Democrats in House support starting impeachment investigations against President Donald Trump.<br />According to Reuters, that group includes representatives from 28 states.<br />With congressional testimony set for Wednesday by former U.S. Special Counsel Robert Mueller.<br />Mueller investigated Trump and Russians who interfered in the 2016 presidential election to help him.<br />More than a third of the 235-member Democratic caucus in the House now favors initiating an impeachment probe. <br />
