When a person born in the U.S.A is arrested and immigration deports or tries to deport them to another country, especially Mexico.
This is common in Texas where first or second generation Mexican Americans are "accidentally" deported to Mexico.
In reference to the Cheech Marin moive Born in East L.A.
Juans brother got cheeched down to Juarez, even though he was born at Dallas Parkland Hospital!
Dont forget your driver license, if you get busted you don't want to get cheeched.