Pretty Americentric line of thought considering us dirty gaters have international "membership", but this also applies to the West in general.
Call it China or the Globalists -- 'and' is probably more appropriate, but there's been a deliberate decades long attack on our educational institutions, our government, our economy, the Christian religion, our borders, Communist infiltration of key positions in government and industry, etc. etc. etc.
And it's been so effective, I just don't see a reversal of course. Even if the moderate collective pulled the wool from their eyes and took action, we're still due for an economic implosion as the debt bubble eventually pops, and we'd have to deal with the indoctrinated masses who would violently resist being jacked out of the Matrix.
Personally, by this point I'm not even thinking about saving the republic, but rather what actions will need to be taken to build something better from its ruins.
Curious what thoughts you have on this, as it's something I think about a lot as well. So far my ideas range from a simple "buy acreage and farm" to a complex "found a privately held corporation to build/buy an entire town based on a Hoppean model of an explicit and enforceable social contract that all residents must agree to" (the latter probably being beyond my ambition or ability to raise funding for).