President Trump should want a rapid impeachment process. The Ukraine story hasn’t been good for him, and there is only one way out — to get impeached, and the sooner, the better. Impeachment is baked in the cake. There is no way that Democrats, having opened an impeachment inquiry, although without a vote, can pull up short now. How could they, after touting revelation after revelation, including a supposed “confession” by Trump’s chief of staff? If there are Democrats in swing districts holding back the House from impeachment, Speaker Nancy Pelosi will have no option but to twist their arms...