Captain America and President Nixon

In 1974, Captain America followed a criminal conspiracy into the Oval Office and found that the supervillain was none other than the president himself. The shock was so great that Captain America changed his name, for a while. The writer explained:

So I had asked myself "Who is Captain America?", and had found an answer for the man. Thing was, America was moving from the overarching Vietnam War toward the specific crimes of Watergate.

I was writing a man who believed in America's highest ideals at a time when America's President was a crook. I could not ignore that. And so, in the Marvel Universe, which so closely resembled our own, Cap followed a criminal conspiracy into the White House and saw the President commit suicide.

And that was the end of Captain America...