Issue a tamper proof picture ID card. The card is called the American Identification Card (AIC) for short. This card is not for illegals, its for real Americans; us. Every purchase made throughout America whether it be on a credit card or cash would require presenting this card to make the purchase. The card would be swiped into a data bank machine similiar to a MasterCard. No card. No purchase. If you can't buy food, gas, or Corona how long do you think they could stay here! Is this inconvenient? Yes it is. But it short order this would drive them out of here. Look at it as forced (no cost) deportation. It will entail some tinkering but I'm sure it would work.