Gregory F. Dorrington

Gregory F. Dorrington


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Greg Dorrington is a partner with more than 15 years of experience helping companies and businesses in highly regulated industries navigate evolving environmental and immigration issues.

On the environmental side, Greg has a particular focus on permitting renewable energy projects, in addition to the more traditional strategic counseling, due diligence, environmental and natural resources litigation, legislative affairs, and other administrative and regulatory matters. Greg is an active participant in various state and federal bar associations’ environmental and natural resources sections, recently completing a two-year chairperson role in Montana. He is also an in-demand presenter on environmental and natural resource legal topics and has been recognized by Benchmark Litigation and Mountain States Super Lawyers.

Greg also has a significant immigration practice. He typically works with businesses providing a full suite of services including visa petitions, waivers, consular processing, labor certification, permanent residence/green card applications, and I-9 compliance. Greg helps various industries, including health care, manufacturing, mining, hospitality, agricultural, and educational institutions with their immigration needs. He also assists individuals, families, and those seeking U.S. citizenship. Greg routinely presents on immigration issues and he previously served on the Government Relations Committee of the American Immigration Lawyers Association’s Asia-Pacific Chapter, which liaises with U.S. Missions abroad.

Practice Areas

Bar Admission

North Dakota
U.S. Court of Appeals for the Ninth Circuit
U.S. District Court for the District of Montana
U.S. District Court for the District of North Dakota
U.S. District Court for the District of Alaska


2007 – J.D. with Honors, Vermont Law School
2003 – B.A. with Honors, Gonzaga University

Prior Experience (Employment)

Private Practice (Anchorage, AK)
Judicial Law Clerk (Anchorage, AK)
U.S. Department of Justice, Environmental and Natural Resources Division (Washington, DC)

Honors & Awards

Leadership Montana Class of 2023
Mountain States Super Lawyers “Top Rated” in Environmental Law and Immigration Law (Present)
Mountain States Super Lawyers Rising Star (2017-2021)
Benchmark Litigation – Future Star (2016-present)

Community Involvement

Helena Youth Soccer Association, Coach

Professional Affiliations

American Immigration Lawyers Association (AILA) (2009-Present)
AILA Asia-Pacific Chapter Government Relations Committee Member (Former)
State Bar of Montana – Natural Resources, Energy & Environmental Section (former Chair)
State Bar Environmental/Natural Resources Sections (Wyoming, Alaska, Idaho)
American Bar Association (Environmental/Natural Resources Sections)

Presentations & Publications

Expanding Into the U.S. Marketplace, An Overview of Immigration Considerations, Soft Landing Training, Cranbrook, BC
Immigration Webinar for North Dakota Employers, ND Job Service
Travel Tuesdays Podcast (Immigration), Employment Law Alliance
Immigration Webinar for Montana Employers, Crowley Fleck PLLP
Immigration Basics, Yellowstone Area Bar Association
Immigration Update, Montana Chamber of Commerce
Montana Energy Law Seminar
Clean Power Plan, Montana Energy Conference
Ground Level Ozone
CERCLA Successor Liability
Legislative Updates for the Montana Defense Trial Lawyers and Montana Medical Association