Sgt. Daniel Perry's attorney has said the soldier was working for a ride-sharing company and acted in self-defense after a protester pointed a gun at him.
U.S. Defense Secretary Jim Mattis has cited Villa's 1916 raid of Columbus as an example of why President Donald Trump was deploying active-duty troops along the U.S.-Mexico border.
He is set to appear in a New York courtroom on Wednesday for arguments in a lawsuit that claims classifying marijuana as a dangerous drug is irrational and unconstitutional.