Lawsuit over Colorado marijuana legalization takes rare legal path

The infrequency with which states sue other states makes it impossible to predict how the case will play out
The Denver Post (US)
Monday, December 22, 2014

In suing to stop marijuana legalization in Colorado, two neighboring states have embarked down an arcane legal pathway that could take years to reach a conclusion, legal scholars say. Nebraska and Oklahoma last week asked the U.S. Supreme Court to toss out portions of Colorado's pot legalization law. The states contend that Colorado's law — and especially Colorado's licensing and regulation of marijuana stores — violates the U.S. Constitution's Supremacy Clause, which says the federal law reigns when state and federal laws are in irreconcilable conflict.