Despite all the problems with the old committee-era Congress, one of the virtues was that chairs were not only centers of power, but they held vast knowledge about public policy and the ... rules of the House. Chairmen could be counted on to find ways to move legislation forward and to improve - or reform - programs, based on a deep knowledge of their history. Today ... chairmen do not have that kind of memory.
It has clearly been a pattern in the past few months of Congress intensifying its efforts of looking into how the executive branch has handled executive authority, and this will only intensify. During the 1970s, Congress was also under scrutiny for how it operated at the same time, it increased its scrutiny of how the White House conducted the war in Vietnam and intelligence. The two go together.