US Senate Majority Leader Reid walks from a meeting with Senate Minority Leader McConnell on the debt ceiling crises on Capitol Hill in Washington
U.S. Senate Majority Leader Harry Reid (D-NV) walks from a meeting with Senate Minority Leader Mitch McConnell on the debt ceiling crises on Capitol Hill in Washington July 31, 2011. U.S. lawmakers were close to a last-ditch $3 trillion deal on Sunday to raise the U.S. borrowing limit and assure financial markets that the United States will avoid a potentially catastrophic default. REUTERS

Senate Democratic leader Harry Reid will support the tentative debt-ceiling deal as long as other Democrats back it as well, a spokesman said on Sunday.

"Senator Reid has signed off on the debt-ceiling agreement pending caucus approval," spokesman Adam Jentleson said.