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About Ann

Ann Navaro advises on and litigates under the federal laws and policies governing natural resources and the environment. After more than 25 years as a top litigator and policy adviser to the federal government, Ann brings exceptional insight and acumen to clients seeking to build infrastructure, produce valuable natural resources, or improve government policies and programs affecting their businesses. She has held senior legal and policy positions at the US Army Corps of Engineers and the US Department of the Interior. Ann spent more than 10 years as a trial lawyer in the Environment and Natural Resources Division at the US Department of Justice, as well as 10 years litigating and managing civil works litigation for the Army Corps.

Ann has advised on some of the most challenging and high-profile policy issues in natural resources and environmental law, including NEPA reform, federal permit streamlining, wetlands protection, and protected species policy.  She has litigated or overseen the litigation of scores of disputes involving a wide range of issues, such as upstream energy permitting, wetlands permitting, offshore royalties, federal takings and constitutional challenges.

Ann supports clients—including infrastructure developers and companies active in the upstream, pipeline, renewables, power transmission, and LNG sectors—on project siting and operation; permitting and enforcement under federal wetland, habitat and resource statutes; and related regulatory issues, policy advocacy, and litigation.


Publications and Speeches

"Non-Federal Infrastructure Projects and the U.S. Army Corps of Engineers in the Federal Courts: The Dakota Access and Keystone XL Pipelines," ABA Infrastructure Magazine, Vol. 60, No. 2, Winter 2021. 

“The Corps of Engineers’ Nationwide 12 Permit: Pipeline Litigation and the Litigation Pipeline,“ ABA Trends Newsletter, Vol. 52, No. 4, March/April 2021.

“The Nationwide Permits – Their Promise and Peril,” ABA SEER Fall Conference, 2020.

"The Wonderful World of WOTUS: The Ever Changing Meaning of Waters of the United States," Rocky Mountain Mineral Law Foundation, July 2020 (co-presenter)

"Permitting Issues Related to the US Army Corps of Engineers," Association of Oil Pipe Lines Annual Business Conference, September 2019

"Taming NEPA Tigers in the Trump Administration: How Two Agencies Handle Consideration of Greenhouse Gas Emissions Under the National Environmental Policy Act And Why It Matters," Texas Environmental Super Conference, August 2019

"Environment and Natural Resource Laws Applicable to Infrastructure Projects: Changes Affecting Projects Planning & Execution," ABA Webinar, July 24, 2019

"NEPA 101," Environmental Law Institute, June 11, 2019



University of Cincinnati College of Law,
Wellesley College,
Bachelor of Arts
cum laude

Bar Admissions

District of Columbia


Environmental Editorial Advisory Board





Will Congress Rollback Trump Regulatory Actions to Advance the Biden Policy Agenda?

January 20, 2021
Energy Legal Blog®

Recent news that the Democrats flipped both U.S. Senate seats in Georgia’s run-off election means that the Democrats have enough votes to add the Congressional Review Act (CRA) to the tools that could be used to advance President-elect Joe Biden’s regulatory agenda...

Changes to Expect in Environmental Litigation Under Biden

January 5, 2021
Energy Legal Blog®

One thing is certain about 2021 – environmental and natural resources-related litigation against the federal government will continue apace and it will impact a range of private projects that require federal authorization of some sort or that rely on public...

Trump Administration Publishes Final Revisions to NEPA Regulations

July 16, 2020
Energy Legal Blog®

On July 16, 2020, the White House Council on Environmental Quality (“CEQ”) published its much anticipated final rule revising the regulations implementing the National Environmental Policy Act...

The Migratory Bird Treaty Act: Flight of Fancy or Enduring Change?

February 26, 2020
Energy Legal Blog®

The Trump Administration has issued a proposed rule, 85 Fed. Reg. 5915 (February 3, 2020), that would codify its interpretation of the Migratory Bird Treaty Act (MBTA), 16 U.S.C. 703 et seq., as applying only to the direct take of birds subject to the Act. For decades...

Trump Administration Proposes Unprecedented and Comprehensive Revisions to NEPA Regulations

January 16, 2020
Energy Legal Blog®

The National Environmental Policy Act (“NEPA”) -- a law that has been referred to as the “Magna Carta” of the nation’s environmental laws – turned 50 years old on January 1, 2020. On January 10, the White House Council on Environmental Quality (“CEQ”) published a...

EPA Repeals Obama Rule Defining Waters of the U.S.

September 13, 2019
Energy Legal Blog®

On Thursday, September 12, EPA General Counsel Matt Leopold announced EPA’s final rule repealing the 2015 Waters of the United States (“WOTUS”) Rule. Significantly, General Counsel Leopold did not announce the final replacement WOTUS Rule, which was proposed...

Highlights from the Trump Administration’s Rulemaking Agenda

July 9, 2019
Energy Legal Blog®

The Office of Management and Budget’s Spring 2019 Unified Regulatory Agenda includes many items with significant implications for the energy and infrastructure sectors. This blog post offers highlights from the Agenda, with an emphasis on upcoming actions...

D.C. Circuit Overturns USACE Permit for Transmission Line

March 4, 2019
Energy Legal Blog®

On March 1, 2019, the D.C. Circuit issued its opinion in National Parks Conservation Association v. Semonite, No. 18-5179, finding that the U.S. Army Corps of Engineers (USACE) violated the National...

Comment Period Open for Proposed WOTUS Rule

February 14, 2019
Energy Legal Blog®

The comment floodgates are open for the proposed federal Waters of the United States (“WOTUS”) rule. The rule would re-define the phrase “waters of the United States” which dictates the geographic reach of the Clean Water Act. The Environmental Protection Agency and the Department of the Army made the pre-publication...

U.S. Court of Appeals for the Fourth Circuit’s Decision to Vacate Mountain Valley Pipeline Nationwide Permit

November 28, 2018
Energy Legal Blog®

On November 27, 2018, the U.S. Court of Appeals for the Fourth Circuit issued the most recent in a series of decisions from various courts affecting the federal permitting and construction of interstate pipelines. Sierra Club v. U.S. Army Corps of Engineers, No. 18-1173...