What is being proposed isn't open borders, because only one side (the U.S.A.) would be allowing people in. Effectively it instead becomes a sieve. If the other

What is being proposed isn't open borders, because only one side (the U.S.A.) would be allowing people in. Effectively it instead becomes a sieve. If the other country has people it doesn't want to deal with, such as homeless or criminals, they could dump them on the first and bar them from coming back, and even do this clandestinely, by effectively barring them with threats of jail time.