Marijuana: A Gateway Drug?

Chris Christie says that marijuana is a gateway drug. Is that really true? I investigate the claim. Also, Jeb!!! Julie Borowski


Sources:

Half have tried marijuana: http://www.pewresearch.org/fact-tank/...

Debate clips: https://www.youtube.com/watch?v=Pd5pP...

For educational purposes. #CNNDebate.

Marijuana is not, I repeat not, a gateway drug: http://www.newsweek.com/marijuana-not...

Most marijuana users do not go on to use harder drugs: http://www.drugabuse.gov/publications...