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OKLAHOMA CITY – After Colorado legalized the use of marijuana in the state, Oklahoma leaders filed a lawsuit.

In 2014, Nebraska and Oklahoma filed a brief with the U.S. Supreme Court, asking the justices to strike down Colorado’s legalization laws.

The Colorado attorney general’s office says the lawsuit alleges “that Colorado’s Amendment 64 and its implementing legislation regarding marijuana is unconstitutional under the Supremacy Clause of the U.S. Constitution.”

At the time, Oklahoma Attorney General Scott Pruitt said the Sooner State was being negatively affected by the decision by voters in Colorado.

On Wednesday, Pruitt argued in a brief that the Supreme Court should consider whether Colorado’s creation of a recreational marijuana market violates federal law.

Pruitt says the Colorado oversees, protects and profits from a $100 million-per-month marijuana regulatory scheme that exported at least two tons of marijuana to 36 states in 2014.

“The state of Colorado would be prosecuted as a drug cartel if it were based south of the border. The Obama administration has failed to enforce federal law, and that neglect has allowed Oklahoma and Nebraska to suffer harm from Colorado’s marijuana trafficking. This lawsuit is not about whether states are required to criminalize marijuana or enforce federal law. Instead, this litigation is the last resort of Oklahoma and Nebraska- made necessary by the Obama administration’s neglect- to stop the flow of Colorado marijuana into our states,” he said.