( CNN ) -- Fresh on the heels of a new immigration law that has led to calls to boycott her state , Arizona 's governor has signed a bill banning ethnic studies classes that `` promote resentment '' of other racial groups . Gov . Jan Brewer approved the measure without public statement Tuesday , according to state legislative records . The new law forbids elementary or secondary schools to teach classes that are `` designed primarily for pupils of a particular ethnic group '' and advocate `` the overthrow of the United States government '' or `` resentment toward a race or class of people . '' The bill was pushed by state school Superintendent Tom Horne , who has spent two years trying to get Tucson schools to drop a Mexican-American studies program he said teaches Latino students they are an oppressed minority . There was no immediate response from the Tucson Unified School District , the law 's main target . Brewer 's signature comes less than a month after she approved a state law that requires immigrants to carry their registration documents at all times and allows police to question individuals ' immigration status in the process of enforcing any other law or ordinance . Critics of the law say it will lead to racial profiling , while supporters say it involves no racial profiling and is needed to crack down on increasing crime involving illegal immigrants . On Wednesday , the Los Angeles City Council overwhelmingly approved a boycott of Arizona-based businesses and governments unless the state repeals the new immigration law . The city 's legislative analyst reported that Los Angeles currently has $ 56 million in contracts with companies headquartered in Arizona . Several other California cities , including San Francisco and Oakland , have already adopted resolutions requesting city departments to not sign any new contracts with Arizona companies . City also bans employees from travel to Arizona . CNN 's Alan Duke contributed to this story .
Law bans classes that `` promote resentment '' of other racial groups . Gov . Jan Brewer approves the measure without public statement . Brewer 's signature comes less than a month after she signed immigration law .