Bentley signed the order Tuesday, which makes state Homeland Security Director Spencer Collier the state's senior law enforcement adviser.
One of Collier's responsibilities will be to ensure the maximum number of state law enforcement officers are on the streets. The governor says consolidating administrative duties among departments is a way to accomplish that.
Bentley says his plan would consolidate some administrative functions such as purchasing, fleet maintenance and communications.
This week, President Obama signed a law banning synthetic marijuana and other synthetic drugs. Dozens of states and local governments have already tried to outlaw fake marijuana, which has been blamed for hundreds of emergency room visits and a handful of fatalities.
But the bans have proved largely ineffective, and there are fears that the federal law won't be any different.
Synthetic marijuana looks a bit like dried grass clippings. It's readily available on the Internet and in convenience stores and smoke shops, where it's sold as herbal incense or potpourri.