Dana Milbank: On impeachment, the worm has turned

Video: Senator Chris Coons (D-Del.) says reports that President Trump pressured Ukraine to investigate his political rival, former vice president Joe Biden, have raised a new level of concern. If true, Coons says the action would be impeachable. (Joshua Carroll/The Washington Post)(REF:carrollj/The Washington Post)Washington • The worm has turned.For months, Democrats agonized over whether to impeach President Trump. Would it cause them to lose House seats? Would it hurt their chances of wi