 California is one of the few states with heat labor protection laws in place, requiring employers to provide adequate shade, easy access to clean drinking water and rest breaks. The Biden administration recently proposed similar regulations for the whole country. But farmworker advocates in California say those laws aren't always enforced. Lourdes Cardenas lives just outside Fresno. Last year, when she was harvesting tomatoes in 90 degree heat, she says she started to feel ill.