The $10 billion lawsuit alleges that the business practices of U.S. gun makers fuels cartel violence. Here's what to know.

The U.S. Supreme Court was set on Tuesday to hear a bid by two American gun companies to throw out the Mexican government's lawsuit accusing them of aiding illegal firearms trafficking to drug cartels and fueling gun violence in the southern neighbor of the United States.

The US Supreme Court is expected to meet on Tuesday to consider whether to block a lawsuit by Mexico against US gun manufacturers - who are accused of putting vast arsenals of weapons in the hands of drug cartels.