As President Donald Trump pressures Mexico to address the flow of migrants and drugs heading north into the United States, the Supreme Court is set to hear arguments Tuesday in a major appeal about one thing that’s crossing the border toward Mexico: guns.

The dispute focuses on whether Mexico can hold U.S. manufacturers liable for gun violence and comes amid rising tensions between the countries.

The Supreme Court will hear arguments in a $10 billion lawsuit Mexico filed against top U.S. firearm manufacturers, alleging their business practices have fueled cartel gun violence there