Lawmakers on both sides of the aisle are worried that an Obama administration decision to increase the value used to calculate costs and benefits of carbon emissions was done without public scrutiny.

Legislators on Thursday charged that the administration developed and issued the estimated cost, used to attach a dollar figure to environmental and energy regulations, without comments from the public, and warned that such opacity could set a bad precedent and cause business owners to doubt the certainty of regulations coming out of Washington.

“The difficulty is there didn’t seem to be an opportunity to speak into this before it appeared,” said Rep. James Lankford (R-Okla.), chairman of the House Oversight subcommittee on Energy Policy, Healthcare and Entitlements.

“We’re all about transparency,” echoed Rep. Jackie Speier (Calif.), the top Democrat on the panel. “Why wouldn’t this have, even though it’s not a rule, been subject to input from the general public?”