The Ohio Bureau of Motor Vehicles has mailed out notices asking owners of more than 47,000 vehicles for proof that they're legal U.S. residents.
The move comes a month after The Columbus Dispatch reported that Ohio had allowed thousands of illegal immigrants to register cars and get license plates.
The letters warn that if the requested documentation isn't supplied by Dec. 8, the vehicle registrations will be canceled.
Joseph Mas, the chairman of the Ohio Hispanic Coalition, said he suspects the crackdown is targeting Latinos with "undetermined immigration status."
BMV spokeswoman Lindsay Komlanc denies the notices are focused on any specific population but says the goal is to make sure every vehicle registration is as reliable as possible.