Sure. The US states mentioned have “right to cancel” laws. You don’t need to fool proton. You tell them you reside in New York or California, and ask them politely if you can cancel for a prorated refund. Many businesses will just say yes because it’s easier than dealing with it. If they steadfastly refuse, then there is little you can do unless they try to break/change their agreement. Ask them!

Fuck that. Set your location to Europe, California, or New York, and then demand they cancel your subscription and provide a prorated refund. Vote with your money.