(CNN) - The Arizona legislature has passed a series of changes to the state's controversial new immigration law in an attempt to address charges that the measure will lead to racial profiling.
Gov. Jan Brewer, the state's Republican chief executive, has not yet indicated if she will sign the changes into law. If approved, they would take effect along with the rest of the statute 90 days after the close of the current legislative session.
Among other things, lawmakers asserted that prosecutors would not investigate complaints "based on race, color or national origin." The law as currently written states that the Arizona attorney general or a county attorney cannot investigate complaints basely solely on such factors.
Lawmakers also stipulated that police officers would not be able to detain an individual based merely on the suspicion that he or she entered the country illegally. The proposed change to the law states that a "lawful stop, detention or arrest must be in the enforcement of any other law or ordinance of a county, city or town of this state."
Arizona's new law requires immigrants to carry their alien registration documents at all times and requires police to question people if there is reason to suspect they are in the United States illegally. The measure makes it a state crime to live in or travel through Arizona illegally.
It also targets those who hire illegal immigrant day laborers or knowingly transport them.
Critics say the measure is unconstitutional and will lead to racial profiling, which is illegal.
Protests against the law are scheduled Saturday in at least 20 states, the District of Columbia and two Canadian provinces. In all, protests are planned for 39 cities.