Meanwhile, the White House is also being questioned about its claims that it has the executive privilege to bar presidential advisers from testifying before Congress. Nearly 10 years ago White House Press Secretary Tony Snow publicly criticized President Clinton for resisting efforts to have his aides testify about Monica Lewinsky. At the time, Snow wrote: “Taken to its logical extreme, that position would make it impossible for citizens to hold a chief executive accountable for anything. He would have a constitutional right to cover up.”