Dean Falvy, a lecturer at the University of Washington School of Law in Seattle, discusses the private testimony of U.S. diplomat Bill Taylor regarding President Trump’s interactions with Ukraine. Falvy argues that by meticulously tracking his digital and verbal conservations with other high-level players, Taylor is forcing the implicated officials to engage at a similar level of detail and precluding them from asserting blanket “I do not recall” defenses.

Marci A. Hamilton, a professor at the University of Pennsylvania, argues that the present allegations against President Trump require representatives and senators to act in the interest of the voters and seek the truth. Hamilton explains that the checks and balances our Constitution’s framers put in place were designed for this very type of situation, and the power to impeach serves a vital role of protecting the people.

Cornell law professor Michael C. Dorf explains why U.S. Supreme Court cases—confusingly, Nixon v. United States and United States v. Nixon—together should foreclose any legal arguments that might have supported President Trump’s strategy to fight impeachment. Dorf explains each of the precedents and their bearing on today’s situation.

Illinois law dean and professor Vikram David Amar comments on President Trump’s recent tweet suggesting that if the Democrats were to try to impeach him, he would ask the Supreme Court to block the impeachment. Amar argues that while critics of that assertion are correct, the legal matter is more complicated than might appear at first blush.