A "terrorism enhancement" will be applied when a former Canadian Armed Forces reservist from Manitoba is sentenced in connection with a white supremacist plot to trigger a race war in the U.S.

A district court judge in Maryland made the announcement after a day-long hearing on Monday.

Prosecutors asked the judge to apply the enhancement when he sentences 28-year-old Patrik Mathews of Beausejour and a U.S. Army veteran, who pleaded guilty to weapons charges.

The enhancement means the pair face a maximum penalty of 25 years behind bars.