The justices will consider whether a 2005 law that gives gun makers broad immunity applies in the case, which accuses them of complicity in supplying cartels with weapons.

Firearm companies have warned the Supreme Court that Mexico's billion-dollar lawsuit could be the end of their business.

The Supreme Court said Friday it will decide whether to block a $10 billion lawsuit Mexico filed against leading U.S. gun manufacturers over allegations their commercial practices have helped caused much bloodshed there.