We all expected the House select committee investigating the Jan. 6 Capitol riot would drop an October surprise–but most of us suspected a partisan-tinged election-eve report warning about those insurrectionist Republicans (hint, hint, keep Democrats in majority). Instead, we get a nice headline-grabbing subpoena of President Donald Trump that will never be enforced. The subpoena prompted a predictable tirade from the 45th president. The headlines and the tirade both accomplish the underlying political goal of thrusting Trump into the news cycle as much as possible before the November midterm elections. Rep. Liz Cheney proposed the resolution (of course) to subpoena...