the same standards as are present in some third world countries?

First offense for stealing -- 4 years hard time.

Second offense -- cut off a hand.

Drug dealing -- 6 years hard time.

Second Offense -- death penalty with no right to appeal.

Apply the same immigration standards in this country which our citizens face if they wish to migrate to Mexico

Apply those penalties in this country; lay in a good supply of body bags; and then wait for the whiners to appear.