Remember an anon a long time ago, over a year, said something like there will come a day when the people of countries all over the world will call themselves Americans. Said it had something to do with our constitution.
Nixon was set up. He probably didn't even know about the Watergate break-in. Plus, he sure as hell didn't need it. He won his reelection 5 or 6 months later with the biggest landslide (at the time) ever. There never was a deep throat.