Also, if your country happens to be one of those that refuse to accept one-sided deportations from USA, you won't get a visa anymore:
"... Cancel visas to foreign countries that won’t take them back."
"... Cancel visas to foreign countries that won’t take them back."
Denying tourists from entire countries will result in a loss of jobs. You don't cut of your arm because of a papercut.
Trump's own wife overstayed and worked illegally on a visitor visa.