“I’m sure this is exactly how you planned to celebrate,” Majority Leader Mitch McConnell said to birthday boy John G. Roberts Jr., the chief justice, as another week of the Senate impeachment trial got underway. While the Senate squabbled over calling witnesses, Rep. Marc Veasey took a trip to Chuck E. Cheese, Speaker Nancy Pelosi plugged her Super Bowl pick and Sen. Rand Paul ditched the trial altogether to complain about his question not being read.