Diogenes
A lot of the jokes hinge on the fact that a congressional researcher rediscovered the text of the 27th Amendment along with a bill that made it legal to have sex with Morgans, Mustangs, and Belgian Warmbloods . And really, you should probably have a working knowledge of the Knights of Sex with Black People to get most of the Polk jokes.

GuyCorngood
It's all true.

BorrowedSolution
It's just a good thing Harrison took America back from the Native Americans, even if he did have to kill 120 million of them to do it.