If you really like the history of U.S. Congress, but wish things were a little more magical, well J.K. Rowling has a story for you.
She posted a new short story to Pottermore this week, broadening the ever-expanding world and mythology of the Harry Potter. It's titled "The Magical Congress of the United States of America (MACUSA)."
(On a side note, it's good to see even wizards in the American government love their complicated acronyms.)
The story goes through the creation of MACUSA (pronounced as mah – cooz – ah, Rowling notes), which was formed after the Salem Witch Trials, and wizards in America decided to hide their true nature from the No-Maj (aka American word for Muggles) population.
It also goes over the debate among the wizarding community about whether they should step in and help America's non-wizards fight the British during the American Revolution, and the splitting of ... OK, I'll stop.
Anyway, if you're into Harry Potter, and excited for the world to get bigger with Fantastic Beasts and Where to Find Them, then it's a good, not-too-long read for the weekend. There's also a video.
This is the most recent in Rowling's set about magic in North America. There's also a collection titled History of Magic in North America.