President Donald Trump has promised to support legislation protecting the marijuana industry in states that have legalized the drug, a move that could lift a threat to the industry made by the U.S. attorney general just three months ago.

Republican Sen. Cory Gardner of Colorado said Friday that Trump made the pledge to him in a Wednesday night conversation.

It marked the latest flip by the president who pledged while he was campaigning to respect states that legalized marijuana but also criticized legalization and implied it should be stopped.

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