Rob and Chris learn about President Nixon and a bunch of other Presidents. Nixon takes a peak behind the iron curtain for the first time and is disappointed that there's no circus. The US and China play a friendly game of ping pong and realize that they're not that different after all. Nixon has a dark, secret fetish that no one knows about. The Soviet Union taste salt for the first time and it blows their minds. Watergate forces Nixon to admit his secrets and resign in shame. Gerald Ford goes from third place to first and is clearly not qualified to be President. Jimmy Carter solves a major hostage crisis in Iran and newly inaugurated President Reagan takes all the credit.
TLDR: Way too many Presidents.