All of Intel's fabs are in the US. Oregon and Arizona (where I live) have the majority of the latest facilities. They built, and then mothballed their latest fab because they were not in the mobile market and desktop/laptop unit volumes have been making steady declines every year now for quite some time. Talk about a 3 Billion Dollar boner......
It's been restarted and now running material. I've worked at every chip company in Phoenix except Intel so I really don't know the exact particulars of all of their manufacturing but I suspect like everyone else, they run assembly and test out of the far east but the chips are made in the good old US of A.