"We are not competing for workers against the farms in our nation. We are competing against farms all around the world. They don't have the environmental regulations we have, they don't have to pay the wages we do," says a spokesman from the Western Grower's Association.
Unions say, however, that the growers have gotten many concessions and that they are using the immigration bill to ensure they continue to get a stream of cheap labor.
"Agribusiness lobby power has kept farm workers excluded from every major labor law for decades. It would be a grievous mistake to allow agribusiness to use the debate over immigration reform to further reduce wages of the poorest workers in the country," Machuca says.
The other disagreement is over how many workers should be allowed to enter the country. Growers argue they don't know exactly how many workers they will need because after 11 million immigrants come out of the shadows, they are not sure who will stay in agriculture and who will pursue other employment.
An idea that has been floated is one similar to what the Chamber of Commerce and the AFL-CIO worked out to cap the number of visas given at 200,000 each year, but growers say that may not be enough.
"We want the number [of workers] we need in order to plant, grow and harvest our crops and we don't know what that is yet," a spokesman from the Western Grower's Association says.