He opposed that bill because it allowed the exploitation of guestworkers.
Let me tell you a short story.
In Jan. 2008, Bernie Sanders visited The Coalition of Immokalee Workers in Florida (nowhere near his home of Vermont) to investigate allegations of slavery and mistreatment of undocumented workers. He woke up with the workers before sunrise, spent days in the fields, and visited them in their trailers at night. After the visit, he organized a Senate hearing on the matter — the first ever hearing specifically called to look into labor conditions in Florida’s fields — and pushed an initiative to pressure companies to sign onto the CIW’s proposal to raise wages by paying a cent more per pound of tomatoes. Burger King agreed shortly after this, others followed suit, and the CIW’s Fair Food Program has been a complete revolution for migrant farmworkers in Florida. Probably the most successful effort in recent decades to improve their lot. You know this, Ms. Huerta.
I worked with the CIW around this time, and his support was a HUGE deal. Nobody else in Washington cared all that much. What you’re doing with this misinformation is a disgrace.