I don't see how it would affect everyone.. It would only affect the united states. People in canada can go and *annoy* us, but since you are in a different country we can't do shit about it.
Suddenly, you have to worry about where the sites you're at are located geographically, because if you offend somebody from an American site, it's a problem.
Plus, Canadians sympathize with Americans a lot. You're our closest neighbors, and best friends. The more rights that are taken away from you, the less free the western world is, and the closer we come to the collapse of our way of life. As American citizens, you should be fighting much harder to keep your basic freedoms, not let them be abused/thrown away whenever your government feels like it.