Sessions' action essentially shifts federal policy from the hands-off approach adopted under the Obama administration to unleashing federal prosecutors to decide individually how to prioritize resources to crack down on pot possession, distribution and cultivation of the drug in those states.
Currently, recreational marijuana is legal in eight states and the District of Columbia
. Twenty-two states also allow some form of medical marijuana, and 15 allow a lesser medical marijuana extract.
Paul told CNN's Michael Smerconish that Americans should have a choice on marijuana use, and he called Sessions' actions "unconstitutional."
"He represents something that is so un-American, as far as I'm concerned," the Texas libertarian said.