The debt ceiling, which could be hit as early as mid-February, has been dragged into a high-stakes fiscal battle snarling Washington, with Republicans refusing to raise it unless Democrats agree to deep spending cuts to tame the ballooning national debt. Neither side is giving much ground.

"The full faith and credit of the U.S. government is an important concept that we should not violate, because these are debts that have been incurred and are coming due, so it is just not right," Greifeld said in an interview on Tuesday.

A failure by Washington to reach a deal to increase the $16.4 trillion legal limit on the nation's debt raises the threat of a U.S. default, another credit downgrade and a panic in the financial markets.

Greifeld is one of more than 100 CEOs who are part of a group called "Campaign to Fix the Debt." The group has been pushing Congress to work together to create a long-term plan to get the federal deficit under control through both increased taxes and spending cuts.

TRIPLE FISCAL FIASCO

Fix the Debt mounted a media blitz in the two months leading up to the so-called fiscal cliff - a package of automatic tax increases and indiscriminate spending cuts scheduled to start at the beginning of the year that threatened to push the nation back into recession, until averted by last-minute legislation.

During the media campaign, the business leaders lined up to say it was okay to raise taxes on the wealthy, but that spending cuts in programs such as Medicare and Social Security were needed as well to put the United States on a more sound fiscal footing.

But the 11th-hour bill, which included tax hikes on household incomes over $450,000, pushed forward the decision on spending cuts, known as the "sequester," by two months, setting up another, possibly more damaging scenario.

In late February-early March, the delay in the sequester ends, the federal government hits its borrowing limit, and authorization for the federal budget runs out.

Erskine Bowles, a former chief of staff to Bill Clinton who along with former Republican senator Alan Simpson founded Fix the Debt, called it "a triple fiscal fiasco."

"If you think you saw uncertainty and concern when we were facing the fiscal cliff, man, you haven't seen anything yet," Bowles told reporters at a press conference at Nasdaq's MarketSite in New York.

SEVERELY DISAPPOINTED

Raising the debt ceiling periodically has not traditionally been a major issue, as government must account for the deficits resulting from its tax and spending decisions.

But last August was an exception. Congress attempted to make spending cuts a condition of raising the debt ceiling, causing volatility in the markets as the United States was pushed to the brink of default and its credit rating was cut.

Greifeld said he and other CEOs were "severely disappointed" that meaningful spending cuts were not addressed in the fiscal cliff negotiations, but that they are hopeful a more balanced approach will be taken in the near future. There will also be other opportunities to force the issue.

"The sequester - we kind of stand out there as the place to make a stand. The debt ceiling is not the place to do it," he said.

(Reporting by John McCrank; Editing by Lisa Shumaker)

By John McCrank