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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National Association of Home Builders and Chamber of Commerce, et al. v. OSHA

U.S. Court of Appeals for the District of Columbia Circuit
Decided
April 16, 2010

D.C. Circuit denied NCLC's petition for review.

AFL-CIO, et al. v. Chertoff, et al.

U.S. District Court for the Northern District of California
Decided
November 18, 2009

Parties withdraw case after Department of Homeland Security rescinds controversial rule 

AFL-CIO, et al. v. Chertoff, et al.

U.S. District Court for the Northern District of California
Decided
November 18, 2009

Parties withdraw case after Department of Homeland Security rescinds controversial rule 

Center for Biological Diversity v. EPA, et al. (Ocean Acidification)

U.S. District Court for the Western District of Washington
Decided
October 5, 2009

U.S. District Court for the Western District of Washington denies NCLC’s motion to intervene in case

Center for Biological Diversity v. EPA, et al. (Ocean Acidification)

U.S. District Court for the Western District of Washington
Decided
October 5, 2009

U.S. District Court for the Western District of Washington denies NCLC’s motion to intervene in case

Chamber of Commerce, et al. v. Napolitano

U.S. Court of Appeals for the Fourth Circuit
Decided
September 9, 2009

Fourth Circuit considers mandatory use of E-Verify for federal contractors

Arizona Contractors Association, Inc., et al. v. Candelaria, et al.

U.S. Court of Appeals for the Ninth Circuit
Decided
March 9, 2009

Rehearing en banc denied 

Arizona Contractors Association, Inc., et al. v. Candelaria, et al.

U.S. Court of Appeals for the Ninth Circuit
Decided
March 9, 2009

Rehearing en banc denied 

American Farm Bureau Federation, et al. v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Decided
February 24, 2009

D.C. Circuit addresses revised particulate matter rule and 24-hour standard

American Farm Bureau Federation, et al. v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Decided
February 24, 2009

D.C. Circuit addresses revised particulate matter rule and 24-hour standard

Commonwealth of Massachusetts, et al. v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Decided
June 26, 2008

Petition for writ of mandamus denied in greenhouse emissions case

Chamber of Commerce v. Brown, Jr.

U.S. Supreme Court
Decided
June 19, 2008

Supreme Court enforces federal preemption of state labor law

Chamber of Commerce v. Brown, Jr.

U.S. Supreme Court
Decided
June 19, 2008

Supreme Court enforces federal preemption of state labor law

Fine Particulate Matter Petitioners Group v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Resolved without decision
May 8, 2007

Motion to withdraw filed

Fine Particulate Matter Petitioners Group v. EPA

U.S. Court of Appeals for the District of Columbia Circuit
Resolved without decision
May 8, 2007

Motion to withdraw filed

Commonwealth of Massachusetts, et al. v. EPA, et al.

U.S. Supreme Court
Decided
April 2, 2007

Supreme Court addresses regulation of carbon dioxide emissions under the Clean Air Act

Commonwealth of Massachusetts, et al. v. EPA, et al.

U.S. Supreme Court
Decided
April 2, 2007

Supreme Court addresses regulation of carbon dioxide emissions under the Clean Air Act

Chamber of Commerce v. Lockyer

U.S. Court of Appeals for the Ninth Circuit
Decided
September 21, 2006

Ninth Circuit considers federal preemption of California labor law

Chamber of Commerce v. Lockyer

U.S. Court of Appeals for the Ninth Circuit
Decided
September 21, 2006

Ninth Circuit considers federal preemption of California labor law

Chamber of Commerce v. SEC

U.S. Court of Appeals for the District of Columbia Circuit
Decided
April 7, 2006

D.C. Circuit addresses SEC mutual fund independent chair and 75% independent director rule

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