RENO, Nev. (AP) — Thirty U.S. representatives urged new U.S. Interior Secretary Sally Jewell on Thursday to make a priority out of reforming the government’s wild horse management program and its spiraling budget that they say has created an “untenable situation” for both the mustangs and taxpayers.

Arizona Rep. Raul Grijalva, the ranking Democrat on the House Natural Resources subcommittee on public lands and environmental regulation, wrote the letter appealing to Jewell “as a conservationist and outdoor enthusiast” to help bring “long overdue” changes at the U.S. Bureau of Land Management charged with protecting the horses.