America's perception of the War on Drugs
3 April 2014 Last updated at 16:05 BST
It has been three months since marijuana became legal in the US state of Colorado, and some other states seem poised to follow suit.
The US government says almost 19 million people in the country are using the drug.
So how do Americans feel about legalised pot?
A new study from the Pew Research Center shows that support for legalisation is increasing.
At the same time opinions are changing about how to deal with drug users and the penalties they may or may not face.
The BBC's David Botti reports.
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