A lot. Heck, the Federalists threatened to secede in 1814, and it caused their party to collapse. The criticisms of the Sp-Am War were so great that Ed. Aguinaldo, the Filipino leader of the then-terrorists, flat-out stated that his goal was to get William Jennings Bryan elected instead of McKinley, because Bryan promised to pull out of the Philippines.
Okay. That stuff never showed up in a lot of my history books. (Why DID the Federalists want to secede when the War of 1812 was just ending?). And did Aguinaldo have cheerleaders in Congress? And didn't he end up becoming pro-American?