The nation's toughest new immigration law is under fire. Arizona's governor signed the controversial legislation Friday amid protests.
Advocacy groups are already planning legal challenges.
The new statute authorizes police to check whether someone is in the country illegally. Arizona officials say they must do what the federal government won't do.
But critics are vowing to fight the new law in court.
CNN's Fredricka Whitfield checked with legal experts, Richard Herman and Avery Friedman, to find out if they think the new law will pass legal muster.