A group of Mexican women migrants has filed a complaint accusing the U.S. government of violating a trade agreement by failing to enforce gender discrimination laws in temporary labor programs, an activist group said Tuesday.

In a petition lodged with the Mexican government, the workers said women were being channeled into lower-paying jobs or excluded altogether from the H-2 visa program, which is for temporary seasonal workers in agriculture and other industries.

Women also often face sexual harassment in the workplace on H-2 visas in the United States and have limited options to take action over it, the signatories added, saying such failings breached the United States-Mexico-Canada Agreement, or USMCA.