Way back in May – when many Americans didn’t know where Ukraine was, let alone the name of its president – presidential scholar Ken Hughes at the University of Virginia wrote about a congressional committee that had voted to impeach the president for defying congressional subpoenas. Hughes’ subject was Richard Nixon and the Watergate scandal that ultimately forced him from office. But while those events were almost 40 years ago, Hughes wrote of the parallels between Nixon and the current U.S. president, Donald J. Trump.