I remember a story from many years ago where an Indian coworker was complaining that his parents tourist visa to the US got denied again. I thought this was really unjust and I was commiserating with him about why the US would even care. He said “because people come over on a tourist visa from India and never leave.” I said that was ridiculous because it’s limiting tourism and he said “No, that’s exactly what I’m going to do. They’re 75 so they’ll just stay here the rest of their lives. Customs will never actually do anything.”
I think of that every time I read stories like this.