The U.S. Senate has acquitted President Trump of two impeachment charges in just the third presidential impeachment trial in U.S. history. Trump was accused of abusing power and obstructing Congress to aid his re-election campaign by pressuring Ukraine to investigate his political rival Joe Biden. Every Democratic senator voted to remove President Trump from office, but they were joined by just one Republican: Senator Mitt Romney of Utah, who supported impeaching Trump on abuse of power. Romney became the first senator ever to vote against his own party’s president in an impeachment trial. President Trump responded on Twitter by hailing the vote as “the country’s Victory” and described the impeachment effort as a hoax. He also tweeted a video claiming Mitt Romney was a secret Democratic asset. Donald Trump Jr. called for Romney to be expelled from the Republican Party. While the impeachment trial is over, the probe of President Trump’s actions could continue. On Wednesday, House Judiciary Chair Jerry Nadler said the House will likely subpoena former national security adviser John Bolton. We speak with Manisha Sinha, professor of American history at the University of Connecticut and a fellow at the Radcliffe Institute at Harvard University.