Arizona Gov. Jan Brewer signed a state bill Friday that requires police to determine whether a person is in the United States legally, which critics say will foster racial profiling and discrimination but supporters say will crack down on illegal immigration.

The Republican governor also issued an executive order that would require additional training for local officers on how to implement the law without engaging in racial profiling.

Earlier in the day, President Obama criticized the bill, calling it “misguided.”

The law signed today by Arizona Gov. Brewer is a social and racial sin, and should be denounced as such by people of faith and conscience across the nation. It is not just about Arizona, but about all of us, and about what kind of country we want to be. It is not only mean-spirited – it will be ineffective and will only serve to further divide communities in Arizona, making everyone more fearful and less safe. This radical new measure, which crosses many moral and legal lines, is a clear demonstration of the fundamental mistake of separating enforcement from comprehensive immigration reform. Enforcement without reform of the system is merely cruel. Enforcement without compassion is immoral. Enforcement that breaks up families is unacceptable. This law will make it illegal to love your neighbor in Arizona, and will force us to disobey Jesus and his gospel. We will not comply.