This period recalls the early 1970s between Congress and Nixon and the war in Vietnam. The president pushed presidential war powers as far as he could take it, and Congress is now trying to reassert its power in this war.

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.

Mr. President [Richard Nixon], I love you, but you're wrong. (on the Vietnam War)

One of the few positive results of the Vietnam War is the irresistible momentum it gave Congress thirty-four years ago to pass legislation lowering the voting age to 18.

I'm proud I went to North Vietnam because Nixon was lying to us,

The Vietnam War required us to emphasize the national interest rather than abstract principles. What President Nixon and I tried to do was unnatural. And that is why we didn't make it.