Two of the lawmakers negotiating an immigration overhaul in Congress say a final deal is at hand but caution that the bipartisan group working on a proposal hasn't finished its work.

Democratic Sen. Chuck Schumer of New York and Republican Sen. Jeff Flake of Arizona said on Sunday that organized labor and the business leaders have reached an agreement on immigration. But they both told NBC's "Meet the Press" that the so-called Gang of Eight senators hasn't yet signed-off on final legislative language.

Sen. Marco Rubio, a Florida Republican, is also part of the bipartisan group working on an immigration deal. After reports emerged on Saturday that big business and labor agreed on a deal, Rubio issued a statement calling a compromise "premature."