Regulatory Lawsuits

The following are cases in which the U.S. Chamber of Commerce, represented by the U.S. Chamber Litigation Center, is participating as a party—a plaintiff, petitioner, or an intervenor.

Results are sorted by the date of most recent activity.

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Sierra Club, et al. v. EPA, et al. (2015 Ozone NAAQS)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
August 23, 2019

D.C. Circuit issues mixed ruling in challenges to Obama Administration’s 2015 Ozone NAAQS

Sierra Club, et al. v. EPA, et al. (2015 Ozone NAAQS)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
August 23, 2019

D.C. Circuit issues mixed ruling in challenges to Obama Administration’s 2015 Ozone NAAQS

National Association of Home Builders of the United States, Chamber of Commerce, et al. v. Acosta

U.S. District Court for the Western District of Oklahoma
Pending
July 12, 2019

U.S. Chamber and coalition of plaintiffs files combined brief in opposition to OSHA’s cross-motion to dismiss and in support of plaintiffs’ motion for summary judgement in litigation challenging provisions of OSHA’s recordkeeping and anti-retaliation rule.

National Association of Home Builders of the United States, Chamber of Commerce, et al. v. Acosta

U.S. District Court for the Western District of Oklahoma
Pending
July 12, 2019

U.S. Chamber and coalition of plaintiffs files combined brief in opposition to OSHA’s cross-motion to dismiss and in support of plaintiffs’ motion for summary judgement in litigation challenging provisions of OSHA’s recordkeeping and anti-retaliation rule.

National Association of Home Builders of the United States, Chamber of Commerce, et al. v. Acosta

U.S. District Court for the Western District of Oklahoma
Pending
July 12, 2019

U.S. Chamber and coalition of plaintiffs files combined brief in opposition to OSHA’s cross-motion to dismiss and in support of plaintiffs’ motion for summary judgement in litigation challenging provisions of OSHA’s recordkeeping and anti-retaliation rule.

National Association of Home Builders of the United States, Chamber of Commerce, et al. v. Acosta

U.S. District Court for the Western District of Oklahoma
Pending
July 12, 2019

U.S. Chamber and coalition of plaintiffs files combined brief in opposition to OSHA’s cross-motion to dismiss and in support of plaintiffs’ motion for summary judgement in litigation challenging provisions of OSHA’s recordkeeping and anti-retaliation rule.

National Association of Home Builders of the United States, Chamber of Commerce, et al. v. Acosta

U.S. District Court for the Western District of Oklahoma
Pending
July 12, 2019

U.S. Chamber and coalition of plaintiffs files combined brief in opposition to OSHA’s cross-motion to dismiss and in support of plaintiffs’ motion for summary judgement in litigation challenging provisions of OSHA’s recordkeeping and anti-retaliation rule.

Natural Resources Defense Council v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Decided
June 27, 2019

D.C. Circuit grants unopposed motion by environmental groups voluntarily dismissing their petitions for review challenging EPA’s guidance concerning project aggregation under the New Source Review program.  The U.S. Chamber was an intervenor in support of the EPA’s revisions to the New Source Review program. 

Natural Resources Defense Council v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Decided
June 27, 2019

D.C. Circuit grants unopposed motion by environmental groups voluntarily dismissing their petitions for review challenging EPA’s guidance concerning project aggregation under the New Source Review program.  The U.S. Chamber was an intervenor in support of the EPA’s revisions to the New Source Review program. 

Environmental Defense Fund v. EPA (TSCA)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
April 26, 2019

D.C. Circuit rejects all but one of environmental NGOs’ challenges to the TSCA Inventory Reset Rule, and remands without vacatur a portion of the rule for EPA to address substantiation of claims that confidential chemical information would not be revealed through reverse engineering.  The Chamber intervened in this case, arguing against the NGO’s claims.  

Environmental Defense Fund v. EPA (TSCA)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
April 26, 2019

D.C. Circuit rejects all but one of environmental NGOs’ challenges to the TSCA Inventory Reset Rule, and remands without vacatur a portion of the rule for EPA to address substantiation of claims that confidential chemical information would not be revealed through reverse engineering.  The Chamber intervened in this case, arguing against the NGO’s claims.  

Environmental Defense Fund v. EPA (TSCA)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
April 26, 2019

D.C. Circuit rejects all but one of environmental NGOs’ challenges to the TSCA Inventory Reset Rule, and remands without vacatur a portion of the rule for EPA to address substantiation of claims that confidential chemical information would not be revealed through reverse engineering.  The Chamber intervened in this case, arguing against the NGO’s claims.  

Air Alliance Houston v. EPA (2017 Risk Management Program)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
August 17, 2018

D.C. Circuit thwarts EPA attempt to delay effective date of Obama Risk Management Program rule 

Air Alliance Houston v. EPA (2017 Risk Management Program)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
August 17, 2018

D.C. Circuit thwarts EPA attempt to delay effective date of Obama Risk Management Program rule 

Air Alliance Houston v. EPA (2017 Risk Management Program)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
August 17, 2018

D.C. Circuit thwarts EPA attempt to delay effective date of Obama Risk Management Program rule 

Air Alliance Houston v. EPA (2017 Risk Management Program)

U.S. Court of Appeals for the District of Columbia Circuit
Decided
August 17, 2018

D.C. Circuit thwarts EPA attempt to delay effective date of Obama Risk Management Program rule 

Chamber of Commerce v. IRS

U.S. District Court for the Western District of Texas
Decided
July 26, 2018

Government dismisses own appeal from Chamber victory against IRS rule used to block certain corporate mergers

Chamber of Commerce v. IRS

U.S. District Court for the Western District of Texas
Decided
July 26, 2018

Government dismisses own appeal from Chamber victory against IRS rule used to block certain corporate mergers

Chamber of Commerce v. IRS

U.S. District Court for the Western District of Texas
Decided
July 26, 2018

Government dismisses own appeal from Chamber victory against IRS rule used to block certain corporate mergers

Chamber of Commerce v. IRS

U.S. District Court for the Western District of Texas
Decided
July 26, 2018

Government dismisses own appeal from Chamber victory against IRS rule used to block certain corporate mergers

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