A military court was set to hear the case Tuesday of an Army doctor charged with refusing to deploy to Afghanistan because he says he doubts whether President Barack Obama was born in the U.S. and therefore questions his eligibility to be commander in chief.

Lt. Col. Terrence Lakin, an 18-year-Army veteran, disobeyed orders to report earlier this year to Fort Campbell in Kentucky to prepare for deployment, saying he believed the orders were illegal.