I found the problem. I don't think money has an intrinsic morality. It might be the result of (what some may deem) immoral action, but the money itself should not be illegal. There is nothing about "suddenly" having a lot of money which should be automatically illegal or prevented, and people should not have to explain every detail about how they obtained the money they did.

This kind of thinking leads to things like asset forfeiture abuse, where merely having a bunch of money on your person is apparently grounds for confiscation.

You may disagree, but I'm entitled to my opinion.