CMV: The U.S. is doing nothing wrong by detaining and deporting Illegal immigrants

I don’t believe most illegal immigrants are bad people, or that they deserve to be treated badly, nor do I believe illegal immigration is a particularly serious problem. It *may* be a net drain on society, I’m agnostic on that point, but I don’t believe it’s significant enough to warrant the kind of time and resource-intensive responses generally favoured by the U.S. government.

That said, I don’t believe the U.S. government (or the government of any country, for that matter) is doing anything morally wrong by deporting illegal immigrants and attempting to stop illegal immigration. I believe countries have the right to control movement of people and goods across their borders, and are responsible for the well-being of their citizens, but have no such responsibility towards the people of other territories (except to avoid actively harming them)... unless they have international agreements or something to that effect. Sending aid, accepting refugees etc. is nice, but I don’t believe they have any obligation to do that kind of thing.

I think it’s clear that conditions in detainment camps are bad. I certainly believe separating children from their parents is unnecessary and cruel. I don’t support empowering law enforcement to “stop” or detain people merely on the suspicion that they may be illegal immigrants (as I believe this inevitably leads, in the U.S. at least, to racial profiling, which is wrong)...

....But many of the people I see opposing this stuff seem to act like deporting illegal immigrants, or trying to stop illegal immigration, is in itself inherently wrong, and I just don’t understand why. What’s wrong with countries having borders and trying to enforce them? Isn’t that something they should be allowed to do?

What am I missing here? Can someone help me understand why people feel this way?