The Supreme Court will decide later this month whether to hear Lobsterman Frank Thompson’s challenge to a Maine rule requiring federally permitted lobstermen to install GPS tracking devices on their boats.

Thompson argues the GPS mandate violates the Fourth Amendment by constituting unreasonable search and seizure, and the high court has agreed to review the case this month after a federal appeals court denied his claim.

Conservation groups contend that monitoring is essential for protecting marine ecosystems and argue against weakening oversight, emphasizing the importance of reliable data for ocean management.

Maine’s lobster industry is concentrated in the state, with last year’s catch totaling more than 78 million pounds, a figure typical for the era but well below decade highs above 120 million pounds.

The tracking rule was implemented by the Maine Department of Marine Resources in 2023 to comply with a federal data-collection rule aimed at improving monitoring and informing regulatory decisions.

Authorities say the monitoring program is crucial for understanding lobster populations, which appear to be declining in New England, and the data help mitigate economic harm to the industry and inform regulations.

A decision could have broad implications for electronic monitoring and tracking requirements across the American commercial fishing industry, and may influence how Fourth Amendment rights apply to state-mandated tracking on private vessels.

Officials emphasize that the data from boat tracking are vital for understanding population trends and guiding management, with critics arguing the program is necessary to protect the industry economically.

The case could set a broader precedent affecting how monitoring requirements are applied in fishing and related industries and shape legal standards for state-imposed vessel tracking.

Plaintiff Frank Thompson, a Maine lobster fisherman, argues the GPS tracker mandate violates the Fourth Amendment; the case has moved through courts and is now before the Supreme Court.

Procedural posture: Thompson appealed to the U.S. Supreme Court after a federal appeals court denied his claim last year, and the Court is set to hear arguments later this month on September 28.

The case centers on whether the GPS mandate constitutes an unreasonable search and seizure, with the Supreme Court’s forthcoming review signaling potential wide-reaching implications for fishing regulations and individual rights.