https://www.washingtonpost.com/opini...y-steep-price/
It’s odd that Trump World’s position continues to be that Mueller’s report totally exonerated Trump, but also that we must not hear from anyone who helped produce that totally exonerating account ever again. But put that aside. Can the White House keep McGahn from testifying?
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“Congress has issued a valid subpoena," Conway told me. “And courts have said that when Congress is doing oversight, its power to enforce a subpoena is not as strong as when it’s doing an impeachment inquiry.”
On top of this, the ludicrousness of the executive privilege claim itself could help build the political case for impeachment. Conway pointed out that one component of one article of President Richard M. Nixon’s impeachment was a similar “improper use of executive privilege,” exercised to prevent a congressional investigation of Nixon’s wrongdoing, just as is happening now.