Last week, John Yoo, the former Justice Department official who drafted a notorious memo justifying the torture of detainees under President George W. Bush, warned that Trump had gone too far in asserting unbridled presidential power.

“That’s what Nixon did,” Yoo told NPR. “That’s what other presidents who have failed have done.”

In an email exchange, Yoo told me he stands by the comparison, and added that Trump’s actions are sufficient grounds for the House to consider impeachment.

“Impeachment [is] the only solution to Trump’s challenge to the constitutional order,” he wrote.