Democratic lawmakers are asking Interior Secretary Ryan Zinke Ryan Keith ZinkeTrump extends Florida offshore drilling pause, expands it to Georgia, South Carolina Conspicuous by their absence from the Republican Convention Trump flails as audience dwindles and ratings plummet MORE to rethink his secretarial order “Promoting Open Science,” fearing it will do just the opposite.

Four House Democrats, led by Rep. Raul Grijalva (Ariz.), the ranking member on the House Natural Resources Committee, sent a letter to Zinke on Thursday urging him to rescind the Sept. 28 order that they worry will lead to gagging scientists.

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We have little trust in the Department’s current leadership to faithfully adhere to principles of scientific integrity,” the lawmakers wrote. “Political decision-makers should never be given as much unilateral authority over scientific data as the Promoting Open Science order would.”

The order, issued by Deputy Secretary David Bernhardt, mandates that officials only use scientific studies or findings whose underlying data are publicly available and reproducible, with few exceptions. The approach is similar to a proposed Environmental Protection Agency (EPA) rule that would require agency regulations to be based off transparent scientific data.

Critics of the EPA rule call it the “secret science” rule and argue that it would exclude consideration of a number of important scientific studies whose evidence can’t be made fully public due to patient privacy concerns.

The lawmakers raised that concern in their letter to Zinke.

“Both policies threaten the suppression of scientific information not aligned with this administration’s agenda under the auspices of improving science based decision making,” the Democrats wrote.

The secretarial order is not the first time Interior political officials have made strides to influence the way science is used and spoken about at the department.

In April, a draft report by the National Park Service, which is housed within Interior, was stripped of any references to climate change, including data on how sea level rise would affect public parks. Since President Trump Donald John TrumpBiden on Trump's refusal to commit to peaceful transfer of power: 'What country are we in?' Romney: 'Unthinkable and unacceptable' to not commit to peaceful transition of power Two Louisville police officers shot amid Breonna Taylor grand jury protests MORE took office, several Interior websites have been scrubbed of any reference to climate change or carbon.