USCIS Reminds Foreign Nationals that Marijuana Violations May Prevent Eligibility for Naturalization
April 23, 2019

At a glance
Despite legalization in several U.S. states and foreign countries, the possession, use, sale, distribution and production of marijuana remain illegal under U.S. federal law and could render a foreign national unable to demonstrate “good moral character,” a key requirement of naturalization to U.S. citizenship.
The issue
U.S. Citizenship and Immigration Services (USCIS) has issued internal policy guidance reminding its adjudicators that, despite decriminalization of the possession, use, sale, distribution and production of marijuana by several U.S. states and foreign countries, these activities remain illegal under U.S. federal law and can prevent naturalization applicants from establishing the good moral character (GMC) required by law to become a U.S. citizen. This includes the use of medical marijuana.
The agency guidance does not reflect a change to U.S. naturalization law or its interpretation, but does highlight the risks of controlled substance use, even use that might be permissible under state law, as a potential bar to becoming a U.S. citizen.
Background
To qualify for naturalization, an applicant must show that he or she has been a person of good moral character, generally during the five-year period immediately preceding his or her application and up to taking the U.S. Oath of Allegiance (a three-year period in some cases). Conduct outside the five-year period can also impact a GMC finding, but U.S. regulations explicitly state that during the GMC statutory period, a person will be found to lack GMC if he or she has violated any federal, state, or foreign law relating to a controlled substance (provided the violation was not de minimis as defined by statute). Despite recent changes in some U.S. states that legalize marijuana within those jurisdictions, U.S. federal law still classifies marijuana as an illegal controlled substance.
What it means for foreign nationals
USCIS’s internal guidance does not change the legal requirements for naturalization. The guidance does, however, signal the Department of Homeland Security’s continued attention to the interaction between federal controlled substance law and recent state (and in some cases, foreign) marijuana legalization laws in the context of U.S. immigration and naturalization.
Foreign nationals on a path to naturalization should consult with counsel if they have questions regarding the intersection between naturalization and marijuana legalization.
This alert is for informational purposes only. If you have any questions, please contact the immigration professional with whom you work at Fragomen.
Explore more at Fragomen
Video
Partner Diana Quintas highlights Brazil’s offshore visa requirements, including eligibility, application steps and key compliance considerations for assignments over 90 days.
Media mentions
Senior Counsel Mitch Wexler discusses why EB-5 is becoming a popular option for H-1B and F-1 visa holders in Silicon Valley navigating multiple pathways to permanent residence.
Media mentions
Partner Isha Atassi and Director Nofisatu Mojidi discuss key considerations for investors from Africa and the Middle East in the EB-5 program.
Work authorization
Senior Manager Katharina Vorländer examines how Germany’s strictly territorial migration and employment laws impact the deployment of third‑country nationals in offshore wind projects, highlighting compliance risks arising from maritime zone boundaries, work authorization limits and Schengen documentation challenges.
Work authorization
Senior Associate Tugba Ozyakup and Senior Immigration Manager Andreia Ghimis explore how the EU’s Entry/Exit System is reshaping Schengen overstay enforcement, the risks facing travellers and employers and the legal remedies available to challenge or prevent adverse outcomes.
Video
Partner Rick Lamanna, Senior Associate Jake Paul Minster and Senior Manager Sergio Flores discuss Canada’s entry requirements for the 2026 FIFA World Cup, including visa-required and visa-exempt nationals, visitor entry rules and key planning considerations for fans, teams, media and volunteers.
Media mentions
Partner Kevin Miner discusses the DOL’s proposed H-1B wage rule and its potential to add significant unplanned costs for US employers.
Media mentions
Video
Senior Associate Isabel Schnitzler highlights key pathways to German citizenship, including descent-based eligibility and standard naturalization requirements and outlines important considerations for individuals exploring their options.
Media mentions
Senior Manager Louise Senior outlines key compliance considerations for UK hospitality sponsors as regulatory expectations continue to evolve.
Media mentions
Senior Counsel Mitch Wexler said proposed H-1B and PERM wage increases could raise hiring costs and apply only to new and pending applications.
Work authorization
UK Government Affairs Strategy Director Shuyeb Muquit explores the latest UK immigration fee increases and their wider implications for migration trends, labour supply and workforce planning.
Video
Partner Diana Quintas highlights Brazil’s offshore visa requirements, including eligibility, application steps and key compliance considerations for assignments over 90 days.
Media mentions
Senior Counsel Mitch Wexler discusses why EB-5 is becoming a popular option for H-1B and F-1 visa holders in Silicon Valley navigating multiple pathways to permanent residence.
Media mentions
Partner Isha Atassi and Director Nofisatu Mojidi discuss key considerations for investors from Africa and the Middle East in the EB-5 program.
Work authorization
Senior Manager Katharina Vorländer examines how Germany’s strictly territorial migration and employment laws impact the deployment of third‑country nationals in offshore wind projects, highlighting compliance risks arising from maritime zone boundaries, work authorization limits and Schengen documentation challenges.
Work authorization
Senior Associate Tugba Ozyakup and Senior Immigration Manager Andreia Ghimis explore how the EU’s Entry/Exit System is reshaping Schengen overstay enforcement, the risks facing travellers and employers and the legal remedies available to challenge or prevent adverse outcomes.
Video
Partner Rick Lamanna, Senior Associate Jake Paul Minster and Senior Manager Sergio Flores discuss Canada’s entry requirements for the 2026 FIFA World Cup, including visa-required and visa-exempt nationals, visitor entry rules and key planning considerations for fans, teams, media and volunteers.
Media mentions
Partner Kevin Miner discusses the DOL’s proposed H-1B wage rule and its potential to add significant unplanned costs for US employers.
Media mentions
Video
Senior Associate Isabel Schnitzler highlights key pathways to German citizenship, including descent-based eligibility and standard naturalization requirements and outlines important considerations for individuals exploring their options.
Media mentions
Senior Manager Louise Senior outlines key compliance considerations for UK hospitality sponsors as regulatory expectations continue to evolve.
Media mentions
Senior Counsel Mitch Wexler said proposed H-1B and PERM wage increases could raise hiring costs and apply only to new and pending applications.
Work authorization
UK Government Affairs Strategy Director Shuyeb Muquit explores the latest UK immigration fee increases and their wider implications for migration trends, labour supply and workforce planning.
