The most controversial part of Arizona's immigration law is expected to go into effect soon after a judge recently decided the provision is constitutional and should move forward.
U.S. District Judge Susan Bolton upheld Section 2b, popularly known as the "show me your papers" law, which allows police officers to check the immigration status of people stopped for other reasons.
An earlier Supreme Court ruling allowed the provision but left the door open to arguments that the law violates civil rights. Opponents would need to present actual victims affected by the law to the court.
Now that the "show me your papers" law is about to start, a slew of lawsuits are expected.
At a press conference, Arizona Gov. Jan Brewer said her state is ready for such challenges.
"As I've always said, Senate Bill 1070 must be enforced fairly, effectively and without compromising civil rights or the Constitution," she said.
"I know the world is watching, but I know that our state and local officers are up to the task," Brewer continued.
Arizona is considered to be the biggest illegal entry point in the country. Five other states have adopted variations of Arizona's law.