On March 19, Sen. Heidi Heitkamp (D-ND), Sen. Mary Landrieu (D-LA), Sen. Mark Begich (D-AK), and Sen. Joe Manchin (D-WV) sent a letter to the President asking the administration to delay a proposed Environmental Protection Agency (EPA) gasoline rule in order for an advanced notice of proposed rulemaking to be released. The rule, which would require a reduction of sulfur from 30 parts per million to 10 parts per million, is currently being reviewed by the Office of Management and Budget.

On March 20, eleven Democratic House of Representatives members sent a letter on the Environmental Protection Agency (EPA) proposed gasoline rule to National Economic Council Director Gene Sperling and Office of Management and Budget Acting Director Jeffrey Zients. The members requested that the rule, which would reduce sulfur in gasoline from 30 parts per million to 10 parts per million, have an advanced notice of proposed rulemaking.