The Trump Impeachment Inquiry: Latest Updates

On Thursday morning, Representative John Shimkus, a veteran Illinois Republican who has announced he will not seek re-election, took to St. Louis talk radio to say, “pull my name off the ‘I support Donald Trump’ list.” (Five minutes and 18 seconds in.)

It was not because of the latest twist in the Ukraine scandal. He pointedly did not break from the president on impeachment. It was because of what he saw as Mr. Trump’s abandonment of America’s ally, Syria’s Kurds, who are now under Turkish onslaught. “I’m heartbroken,” he told KMOX.

Why is that important? Republican anger over Syria may not translate directly into support for impeachment, but if more Republicans — especially among the 19 who have thus far announced their retirement — take their names off the “I support Donald Trump” list, they may not be available to man the barricades when the Democrats come to impeach.

Sixteen conservative lawyers, including George T. Conway III, the husband of President Trump’s counselor Kellyanne Conway, called on Thursday for “an expeditious impeachment investigation, vote in the House of Representatives and potential trial in the Senate” for what they called Mr. Trump’s abuse of office.

“We believe the acts revealed publicly over the past several weeks are fundamentally incompatible with the president’s oath of office, his duties as commander in chief and his constitutional obligation to ‘take care that the laws be faithfully executed,’” the group wrote.

The lawyers included Charles Fried, a Harvard Law School professor and solicitor general under Ronald Reagan, Orin S. Kerr of the University of Southern California and contributor to the popular Volokh Conspiracy website, and Stuart M. Gerson, an assistant attorney general for the civil division under President George Bush.

Mr. Trump took to Twitter on Thursday morning, clearly unhappy that Fox News Channel, the conservative media redoubt that he needs to maintain the support of his core voters, has been insufficiently supportive.