The Missouri House has approved legislation requiring employers to use a federal system for checking potential employees' legal resident status.
Missouri already requires public and private employers that receive loans, contracts or grants from the state to participate in a federal work authorization program. The bill would extend the requirement to all Missouri employers.
Immigrant advocacy groups in Missouri say that while they are pleased the US Supreme Court struck down most of a controversial Arizona immigration policy, they remain concerned about a provision that had the support of the justices.
The five-to-three ruling on Monday allowed Arizona law enforcement officials to check the papers of anyone they suspect is in the country illegally. Opponents say that will lead to biased policing.