Cheney Upholds Power of the President to Withhold Documents (washingtonpost.com)

Cheney Upholds Power of the Presidency (washingtonpost.com):

The vice president has been at the forefront of an effort by the Bush White House to promote an expansive view of presidential power by frequently invoking constitutional principle in refusing to hand over documents to Congress or allowing administration officials to testify before congressional committees.

The White House, for example, initially refused a request by the independent commission investigating the Sept. 11 attacks to allow national security adviser Condoleezza Rice to testify... ."