Under pressure, the White House signaled Wednesday it might accept legislation eliminating Federal Aviation Administration furloughs blamed for lengthy flight delays for airline passengers, while leaving the rest of $85 billion in across-the-board spending cuts in place.
Since the furloughs began Sunday, the amount of daily delays in U.S. airports have jumped from 5,500 on average to more than 6,500. Some were caused by weather. But the National Air Traffic Controllers Association said that compares with 2,500 delays for the same period a year ago.
While flight attendants deal with passengers in the sky, TSA agents are on alert to watch for flyers who may be upset over long airport wait times.
On Capitol Hill, the blame game is well underway.
Rep. Bill Shuster, (R-Pa.), said, "This administration is implementing sequestration to cause the most pain on the traveling public that it possibly can..."
At the White House, press secretary Jay Carney said that if Congress "wants to address specifically the problems caused by the sequester with the FAA, we would be open to looking at that.
"But that would be a Band-Aid measure," he added. "And it would not deal with the many other negative effects of the sequester, the kids kicked off of Head Start, the seniors who aren't getting Meals on Wheels, and the up to three-quarter of a million of Americans who will lose their jobs or will not have jobs created for them."
Officials estimate the FAA furloughs will save slightly more than $200 million through Sept. 30, a small fraction of the $85 billion in overall reductions that stem from across-the-board cuts, officially known as a sequester, that took effect in March.
Senate Majority Leader Harry Reid, D-Nev., and the other top Democrats have consistently expressed opposition to piecemeal legislation aimed at easing the impact of the spending cuts, a position that congressional officials say reflected the administration's position.
But support for that view among Senate Democrats has eroded in recent days as airlines reported thousands of flight delays and industry executives pressed for a restoration of full funding for air traffic controllers.
"I think it's better to do a big deal, but as we work toward that big deal we have to admit that there are some things that are very problematic," said Sen. Amy Klobuchar, a Minnesota Democrat who helped write legislation to give the FAA flexibility to switch money between accounts and permit full staffing by controllers.
At least three other Democrats support the measure, which Klobuchar co-sponsored with Republican Sen. John Hoeven of North Dakota and several other GOP lawmakers. "This is a very simple bipartisan bill that fixes the problem," Hoeven said, adding he had informed the White House of his plans.
It was not clear whether supporters of the legislation or of similar proposals would seek a vote before Congress begins a one-week vacation at the end of the week.
Nor was it clear whether any FAA-related measure might include a provision to keep open smaller towers that the agency says might be closed as a result of the spending cuts, a provision that numerous lawmakers in both parties favor.
Democrats said it was unlikely any FAA bill would be expanded to offset the impact of the cuts on Head Start or other programs that draw more support from Democrats than Republicans.
Apart from the inconvenience caused by delays, some lawmakers have criticized Huerta, saying they were blindsided by the flight delays. Republicans have been particularly vocal.
Huerta got a public tongue-lashing during the day when he appeared before the House Appropriations Committee.
"You didn't forewarn us this was coming. You didn't advise us how to handle it. This imperial attitude on the part of this administration - you are the latest example of it - is disgusting," Rep. Hal Rogers, R-Ky., said.
Huerta said LaHood had warned at a news conference in February that the furloughs were coming and could create flight delays of up to 90 minutes.
He also said he had testified about them at a hearing before a different committee earlier over the winter.
"It's fair to say the thing that captured the media's attention was the" threatened closure of small towers, he added. "The furlough problem didn't sink in with Congress and the public until recently."
The Associated Press contributed to this report.