le mot so very juste from John Oliver

"If Karl Rove had known that he would someday have to testify to under oath to Congress about the advice he gave the president, he would have had to limit that advice to things that weren't shameful, illegal, or spectacularly boneheaded."

And Stephen Colbert: "If the president's staff had to live in constant fear of being hauled in front of Congress then they wouldn't be able to give him the kind of advice that would make Congress want to haul them in in the first place."