In an effort to ensure their citizens are treated fairly in Alabama, 16 nations, including Mexico, filed briefs against the state’s controversial new immigration law that has already drawn fire from the U.S. Department of Justice.

Edward Still, a Birmingham attorney who filed the brief, told The Montgomery Advertiser that the nations “want to have one immigration law and not 50.”

"Mexico has an interest in protecting its citizens and ensuring that their ethnicity is not used as basis for state-sanctioned acts of bias and discrimination," the brief said, according to the paper.

The other 15 nations in addition to Mexico are Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Nicaragua, Paraguay, Peru and Uruguay