Yes, absolutely. See my signature. We Oregonians and Washingtonians have much more in common with British Columbia than anywhere else in the USA, especially east of the Rocky Mountains.
The Timbers Army flies multiple Cascadian flags at every match. During games against Seattle and Vancouver the Doug (Cascadian) Flag flies alongside the American and Canadian flags. Whitecaps and Sounders fans also hang pro-Cascadia banners and fly the Doug Flag, but not as much. In the video, notice how much the Cascadian flag outnumbers the American flag in the stands. It's not entirely serious, but it's still a statement.
http://www.youtube.com/watch?v=bxxVlRg3TrQOf course for the movement to become serious in a political sense it would take an economic failure on par with the Soviet Union in the 1980s and an occupation of a large country like Iran to drain trillions of dollars from the government. Also think of an extremely tyrannical federal government in that scenario.
No, because Northwest Front.
Northwest Front is practically nonexistent outside of a small corner of Eastern Washington and Northern Idaho. There is no way those nazis would be able to take over anywhere there are a lot of people who are not fully white. They would never take over the would-be country.