[thaumasiotes]

> I don't think anyone is seriously making this argument.

I'm not responsible for what you think, but I'll note that in general it's a good idea to look at what people are saying before deciding what you think they're saying.

> By this argument, aren't all immigration restrictions invalid?

No; for example, if you apply for a visa and check the box saying "I am planning to engage in a terrorist attack against the United States", I'm pretty sure this argument would have nothing to say about denying your visa. It does invalidate plenty of historical restrictions.