“The most a president generally has to fear from congressional hearings is embarrassment; there is always an aide to take the fall. Impeachment puts his own job on the line, and demands every hour of his day. The rarest commodity in any White House is time, that of the president and his top advisers. When it’s spent watching live hearings or meeting with lawyers, the administration’s agenda suffers.
“This is the irony of congressional leaders counseling patience, urging members to simply wait Trump out and use the levers of legislative power instead of moving ahead with impeachment. There may be no more effective way to run out the clock on an administration than to tie it up with impeachment hearings.” — from “Impeach Donald Trump,” an Atlantic essay (March ’19 issue) by Yoni Abbelbaum.
Not to mention a killer campaign narrative for the 2020 Democratic nominee.