Even though he quit before the full House could vote, Richard Nixon remains the only president in American history to be driven from office through the impeachment process. Little wonder, then, that we’ve been drowning in Watergate analogies ever since House Speaker Nancy Pelosi announced an impeachment investigation last month.

So, is the Ukraine imbroglio Watergate 2.0? Not exactly, but there’s enough similarity between the two scandals to give President Trump’s supporters agita. There are close parallels in Trump’s conduct to at least two of the three articles of impeachment that forced Nixon’s resignation.