A United South Carolina

The nations state in their filings that their relationships are with the United States and that relationship should not be affected by what states do. They’ve filed similar challenges to Alabama’s new law. Mexico said it “has an interest in protecting its citizens and ensuring that their ethnicity is not used as the basis for state-sanctioned acts of bias and discrimination.”That was a view shared in a separate request to join the litigation by Argentina, Bolivia, Brazil, Chile, Colombia, Costa Rica, Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Nicaragua, Paraguay, Peru and Uruguay.

Lawyers filing the papers referred questions to the Mexican embassy in Washington.

In a subsequent statement, the Mexican government said some of the law’s “provisions would criminalize immigration and could lead to the selective application of the law. Its enforcement could adversely affect the civil rights of Mexican nationals living in South Carolina or visiting that state.”

Mexico said it would “continue to make use of all available means and channels in order to firmly and immediately respond to any violation of the fundamental rights of Mexicans, regardless of their immigration status.”

South Carolina’s law also mandates that all businesses use an online system the U.S. government runs to check their new hires’ legal status. If they knowingly violate the law, they can lose their business license.The Justice Department argued Monday that only the federal government has the constitutional authority to enforce immigration laws.

The law also makes it a felony to create fake identifications or harbor illegal immigrants, which U.S. Attorney Bill Nettles in South Carolina said violates people’s right to due process and is unconstitutional.

The Justice Department is challenging similar laws in Alabama and Arizona and is reviewing them in Utah, Indiana and Georgia.

They argue the state laws divert resources from efforts to fight terrorism, drug smuggling and gang activity and will bring harassment and detention of foreign visitors, legal immigrants or U.S. citizens who can’t immediately prove their legal status.

But supporters say the state laws wouldn’t be necessary if the federal government would do its job of enforcing the law.

Rob Godfrey, Gov. Nikki Haley’s spokesman, said Tuesday that the governor wouldn’t back down in the face of lawsuits and challenges.

“The governor’s job is to protect the citizens of South Carolina. That’s what she’s doing, and she isn’t going to stop no matter who decides to sue her, whether it be the unions, the ACLU, DOJ or anyone else,” Godfrey said.