The Food and Drug Administration announced a proposed federal rule on Tuesday that would allow states to import some types of prescription drugs from Canada.

The FDA would have to authorize the importation programs, and eligible drugs would need U.S. labeling and authenticity testing. Under the rule, importation would need to “demonstrate significant cost reductions to the American consumer.”

Earlier this year, the Colorado General Assembly passed Senate Bill 19-005, which created a Canadian Prescription Drug Importation Program. Upon federal government approval, the program would develop a list of Canadian suppliers of drugs that would result in an overall cost savings.

“People across our state are tired of being ripped off by the high price of prescription drugs and health care,” said Gov. Jared Polis in a statement. “We look forward to reviewing this rule to allow us to move forward.

The FDA proposes to limit supply chains from Canada to include the manufacturer, the seller and the importer. American wholesalers and pharmacists could be co-sponsors of plans along with states.

The Organisation for Economic Co-operation and Development found that in 2014, Americans spent on average $1,112 per capita on pharmaceuticals. It was the highest amount of any country surveyed. Canadians spent the second highest amount, at $772.

Nearly eight in 10 Americans describe prescription drug prices as “unreasonable,” and almost 30% have avoided taking their medications as prescribed due to cost, the FDA pointed out.

“Access to affordable prescription drugs, many of which are needed to treat life-threatening and serious conditions, is a daily concern and challenge for many Americans,” the rule states.

The rule will now proceed to the public comment stage.