House Republicans are making a final push this month to give schools a temporary break from healthier school meal standards.

The school meal rules, phased in since 2012 and championed by first lady Michelle Obama, require more fruits, vegetables and whole grains in the lunch line. The standards also limit sodium, sugar and fat.

Some school nutrition directors have lobbied for a break, saying the rules have proven to be costly and restrictive. House Republicans have said they are an overreach, and have pushed a one-year waiver that would allow schools to opt out of the standards if they lost money on meal programs over a six-month period.

The waiver language stalled this summer after the first lady lobbied aggressively against it and the White House issued a veto threat. The food and farm spending bill that contained the provision was pulled from the House floor, a move House Republicans attributed to scheduling issues.

But the waiver has new life this month as lawmakers are expected to pass a catchall spending bill to keep government programs running. Republican Rep. Robert Aderholt of Alabama, the chairman of the House subcommittee that oversees the school meal spending, has been pushing to include the waiver in the wide-ranging bill.

Senate Agriculture Chairwoman Debbie Stabenow, D-Mich., and Republican Sen. John Hoeven of North Dakota both said Thursday that there are ongoing negotiations between the House and the Senate over the waiver. A Senate bill approved by a spending committee in May did not include the waiver, but called for further study on sodium and whole grains requirements.

At the time, Hoeven said there was not enough support for the House’s one-year waiver in the Senate, even though he was supportive of it himself. But he said this week that could change as lawmakers negotiate the massive year-end spending bill.