Time heals all wounds.

It made Pres's Truman, Kennedy, Roosevelt (both), Johnson (both), Hoover, Adams (both) Reagan and Eisenhower more tolerable to their critics and venerated in some circles, especially since they aren't around to make public appearances and commentary. All had their quirks, failures, image problems and other negativities.

It's too early for Pres's Carter, Bush (both) and Clinton, as they still have some limelight being shined upon them.

Pres. Nixon, by virtue of his resignation, will probably always have a shadow over his administration.