> Any policy that suddenly pulls the rug on them is notable precisely because we created the problem

Are you saying that it is wrong to ever solve a problem quickly, if you are the one who created it?

If other innocent people are collateral damage, then yes. Essentially the US "let this" happens and now wants to reverse course, but they're gonna be taking down a lot of good, hard working people with them.

Also, this will negatively affect a TON of citizens, which always sucks ass even if you think immigration is evil.

It depends on what problem and how you're "solving" it.