Biden says he is examining power to shut US border on his own

[bhikkhu]

8. The millions of people who benefit from the cross-border trade? (2 billion $ a day est.)

You can't close the border to people without closing the border to commerce, and closing it to commerce devastates the economies of numerous cities.

It's worth adding, closing the border only closes the legal entry points, which are primarily used by people travelling legally. Someone might correct me if I'm wrong.