Muscogee Nation Lighthorse Police Officer Amy Bennett A U.S. Supreme Court decision from last year has changed law enforcement in the state of Oklahoma. That decision restored tribal authority to both police crimes and prosecute criminals. It’s also led to greater responsibility for Muscogee Nation officers, known as Lighthorsemen. On a recent Friday night, Lighthorse Police Officer Amy Bennett was in the parking lot of the River Spirit Casino near downtown Tulsa. The area is already bustling with traffic and people headed into the casino for a night out. Bennett is 48 with straight blonde hair pulled back into a ponytail and tattoos-including a pair of handcuffs with a rose threaded through inked down both arms.