Marijuana tourism is one of the biggest questions facing pot regulators in Colorado. A special legislative panel looking at marijuana regulations plans to discuss the question Friday.

The constitutional amendment approved by voters last year allows marijuana use by adults over 21. It doesn't specify whether only Colorado residents can use the drug, prompting speculation about marijuana tourism.

A Colorado task force made up of law enforcement, government officials and marijuana advocates recommended that the state Legislature not step in. The task force says out-of-state visitors should be able to buy marijuana as long as they don't take it home. However, many state lawmakers are appalled at the idea of pot tourism.