Dozens of House Republicans on Monday accused the Department of Homeland Security of using the sequester as an excuse for releasing immigrant detainees, which they said furthers the Obama administration’s goal of weakening U.S. immigration laws.

“We are deeply concerned that the Department of Homeland Security (DHS) is using sequestration as a vehicle to further the Administration’s disregard for enforcing our immigration laws,” they wrote in a letter spearheaded by Reps. Duncan Hunter (R-Calif.) and Matt Salmon (R-Ariz.) and signed by 37 House Republicans. “Specifically, we are troubled by recent reports that DHS has released hundreds of illegal immigrants, rather than finding cost savings elsewhere in the agency.”