Democratic Rep. Elijah Cummings, D-Md., died Thursday morning at Johns Hopkins Hospital from “complications concerning longstanding health challenges,” his office said in a statement. Cummings, 68, was the chairman of the House Oversight and Reform Committee and heavily involved in the impeachment inquiry. Cummings, of Baltimore, has not returned to work after an undisclosed medical procedure that he said would only keep him away for about a week. […] He missed two roll call votes Thursday, the first day back following a two-week recess. He previously released a statement saying he’d be back by the time the session resumed. The...