WASHINGTON — Conservatives cheered the demise of the federal Export-Import Bank Tuesday and vowed to beat back efforts to revive it, even as business leaders issued dire warnings that letting the agency expire at midnight would hurt U.S. competitiveness globally.

“Ding Dong, the Ex-Im Bank is dead!” declared FreedomWorks, one of the outside groups responsible for transforming the bank from an obscure government lending institution into a conservative rallying cry.

“This is a critical blow to manufacturers,” countered Aric Newhouse, a senior vice president at the National Association of Manufacturers, arguing that the bank plays a necessary role in underwriting loans to help foreigners purchase U.S. goods.

The charter of the 81-year-old government agency expires at midnight Tuesday without congressional action, and with the House and Senate on recess for the July 4 holiday there was no chance of a late reprieve. Supporters warn that billions of dollars in pending deals are at risk because of the failure to renew the bank’s charter, something that’s been done numerous times over the years with little to no controversy.

“Unfortunately, a vocal minority in Washington is putting ideology ahead of American workers,” the White House said.

But although the Export-Import Bank will be unable to make new loans as of Wednesday, it will stay in business for the time being to service more than $100 billion in outstanding loans and guarantees. The bank is funded through Sept. 30.

Supporters are making plans to revive the bank in the coming weeks by attaching it to must-pass legislation to extend the highway trust fund. Senate Majority Leader Mitch McConnell, R-Kentucky, told The Associated Press this week that supporters of the bank have the votes to pass it and he will give them the opportunity to do so. Whether it could then get through the House is less certain, and conservative groups pledged to redouble their efforts to oppose it.

Under pressure from tea party-backed conservatives, Republican leaders and presidential candidates have lined up against the bank, defying their traditional business allies.

That’s led to bitter grumbling from some business leaders. Two business officials on a conference call Tuesday organized by the Exporters for Ex-Im Coalition attacked House Majority Leader Kevin McCarthy, R-California, for turning against the bank.

One of them, Don Nelson, president of California-based ProGauge Technologies, said he’d met with McCarthy personally to explain that his company that makes oil industry equipment will have to stop exporting if the Export-Import Bank is dissolved.

“Truth be told, he has zero experience or knowledge on the topic and yet he and other misguided congressmen portray they’re experts on this topic and say the private sector can take over,” Nelson said.

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