With the Alabama immigration law taking effect, some 2,000 Hispanic students didn’t attend school Monday. Teachers unions and Hispanic activists are voicing their concerns.

Alabama’s first Republican supermajority since Reconstruction approved this summer what many consider America’s toughest immigration law. And last week, federal Judge Sharon Lovelace Blackburn surprised many Americans when she upheld key parts of the law – including a portion that says schools must check the immigration status of children when they enroll, as well as the status of their parents.