A dispute between business and labor groups over wages for low-skilled workers is a final issue holding up a deal on a sweeping immigration bill in the Senate.
Officials from outside groups say the Chamber of Commerce and AFL-CIO have reached significant agreement on a new visa program to bring up to 200,000 lower-skilled workers a year to the country.
The number of visas would fluctuate according to demand, and the workers would be able to change jobs and could seek permanent residency.
But the AFL-CIO is pushing for higher wages for the workers than the chamber has agreed to so far. The AFL-CIO says the chamber would pay below median wage, but the chamber says it would pay about the same as American workers get.