Trump’s State of the Union Under Cloud of Impeachment

This Friday the Senate is expected to vote on whether to call witnesses to testify in the impeachment trial of U.S. President Donald Trump. If they vote yes, Trump will deliver his State of the Union speech while being tried for his removal from office. Two American presidents have delivered state of the union addresses under threat of impeachment: Democrat Bill Clinton and Republican Richard Nixon. White House Correspondent Patsy Widakuswara looks at those speeches and what Trump might learn.