Commentary The videos introduced into the Trump impeachment trial were utterly inappropriate. They should have been vigorously objected to, and excluded by the chair. An impeachment trial takes place in a legislative chamber and not a courtroom. The Senate has far more procedural flexibility than a judge does. Still, the Constitution tells us that it is a trial. That implies standards more rigorous than in an ordinary legislative hearing, and certainly different from those at a film festival. The doctored anti-Trump videos did not meet any reasonable standard of admissibility. Rather, they constituted the latest example of the questionable tactics we have learned to expect from the lead impeachment manager, Rep. Jamie Raskin (D-Md.). That’s the guy who has reminded us at least twice that he was a “professor of constitutional law.” Other examples of Raskin’s dubious behavior include arguably misrepresenting a key piece of Founding Era impeachment evidence, and …