Trump-era Environmental Regulations at Risk: Potential Changes Under a Biden Administration


This is the fourth in a series of articles Jones Walker LLP is providing that will explore the impact of the 2020 Election on Environmental Law.

There are clear differences between the environmental priorities of President Trump and former Vice-President Biden. President Trump’s priorities have included promotion of domestic energy including oil and gas and streamlining of permitting and approvals for industrial projects. Biden has said he will transition away from and end subsidies on fossil fuels, strengthen regulation of the oil and gas industry, including imposing aggressive methane pollution limits, increase investment in clean energy, and recommit the US to the Paris Agreement on climate change. But if elected, how easily and quickly could Biden implement regulatory changes? 

Policies, guidance documents and Executive Orders largely could be changed at will by executive branch agencies and departments under Biden. Changes in environmental regulations, however, typically involve a lengthy process. Rulemakings require public notice of the proposed regulations and a comment period of 30 to 90 days before final regulations can be issued. Significant rules can take two to three years to complete and may be followed by litigation challenging the final rules.

Possible Targets of a Biden Administration

Several environmental regulations issued under Trump appear to conflict with Biden’s priorities and may be targeted for change if Biden is elected. The following are a few examples: 

A Biden administration could also take positions in pending litigation to undermine Trump-era regulations. For example, the Biden executive branch could choose not to defend the regulation at issue or ask the court to delay the proceedings while it reconsiders its position. 

Potential Impact of the Congressional Review Act

The Congressional Review Act (CRA)[9] requires federal agencies to submit a copy of each final rule to both chambers of Congress. If within roughly 60 calendar days following submittal Congress introduces a “joint resolution of disapproval” of the rule, which is then approved by a simple majority of the Senate and House (with filibuster being precluded) and signed by the President, the rule is invalidated. And if a rule is invalidated, a new rule “in substantially the same form” cannot be issued unless specifically authorized by a subsequent law enacted by Congress. 

A primary purpose of the CRA, however, is to allow a new administration time to essentially undo actions taken in the waning days of the prior administration. Toward that end, the CRA provides if a rule is submitted to Congress when there are less than 60 “session days” remaining in the Senate or less than 60 “legislative days” remaining in the House before they adjourn for the calendar year, members of the new Congress are allowed roughly another 60 days, beginning on the fifteenth session or legislative day of the new Congress, to introduce a “joint resolution of disapproval” of the rule. This “lookback period” for 2020 is estimated to have commenced around the beginning of June 2020.

Notably, the term “rule” as used in the CRA arguably is not limited to regulations but also includes agency guidance documents.[10] As a result, guidance documents may also be subject to invalidation under the CRA. Moreover, agencies have not always submitted guidance documents to Congress pursuant to the CRA, and such guidance documents may be subject to invalidation even if issued prior to the commencement of the 2020 CRA “lookback period.”

This means that if Joe Biden is President and the Democrats hold a majority in the Senate and House after the 2020 election, they would have several months into 2021 to invalidate environmental regulations and guidance issued under the Trump administration during the last seven months or so of 2020 (and perhaps earlier with respect to guidance documents not submitted to Congress).[11] In 2017, President Trump and the Republican Congress used the CRA to invalidate more than a dozen so-called “midnight rules” related to the environment issued under the Obama administration. Given the opportunity, the Democrats may return the favor in 2021.

The next article in this series will look at possible Senate and House outcomes and their effects on key energy industry committees. Join us after the election, on November 11, 2020 for a roundtable discussion of the election results and the potential impact on environmental law. 


[1] See https://www.epa.gov/sites/production/files/2020-10/documents/frl-10016-21-oar_10-21-20_admin.pdf.

[2] See https://www.epa.gov/sites/production/files/2020-10/documents/frn_mm2a_2060-am75_final_rule.pdf.

[3] 85 FR 57018.

[4] 85 FR 57398.

[5] 85 FR 43304.

[6] 84 FR 42210.

[7] 85 FR 22250.

[8] 84 FR 32520.

[9] 5 U.S.C. §§ 801-808.

[10] See 5 U.S.C. §§ 551(4) and 804(3).

[11] A Biden administration could withdraw or modify agency guidance irrespective of the CRA. Invalidation of an agency guidance under the CRA, however, would arguably prevent the agency from thereafter issuing guidance “in substantially the same form” unless specifically authorized by Congress to do so.


© 2025 Jones Walker LLP
National Law Review, Volume X, Number 303