Consider a recent incident. The House GOP caucus voted to sharply curb the power of the Office of Congressional Ethics. Contrary to some opportunistic statements by House Minority leader Nancy Pelosi, a California Democrat, there's bipartisan consensus that the OCE is a hot mess. House Judiciary Committee Chairman Bob Goodlatte, a Virginia Republican, led an effort to scrap it, knowing that the GOP would take a political hit for doing so. When the predictable firestorm hit, Mr. Trump hied to Twitter to mock the effort as a distraction, earning a nanosecond of favorable coverage by killing the initiative.