Shubow said his organization is actively encouraging Congress, which appropriates some of the funding for the monument, to intervene.
Rep. Rob Bishop (R-Utah), chairman of the Natural Resources subpanel dealing with national parks, suggested in March that he could recommend withholding further appropriations if stakeholders are unable to reach an agreement.
A spokeswoman for the Natural Resources Committee told Roll Call the panel is continuing to watch the situation closely but no decisions have been made about how to proceed.
Sen. Jeff Flake, R-Ariz., takes a selfie with Faye, a pot belly pig, after a news conference held by Citizens Against Government Waste at the Phoenix Park Hotel to release the 2015 Congressional Pig Book which identifies pork-barrel spending in Congress, May 13, 2015.