Washington State Attorney General Bob Ferguson offered the following statement in response to the announcement that Oklahoma and Nebraska have sued Colorado in the United States Supreme Court over marijuana legalization.

Nebraska and Oklahoma allege that Colorado’s Amendment 64 and its implementing legislation regarding recreational marijuana is unconstitutional and preempted by federal law.

“I am disappointed that Nebraska and Oklahoma took this step to interfere with Colorado’s popularly enacted initiative to legalize marijuana,” said Ferguson. “I will be following this closely and intend to ensure that Washington’s interests are protected. I will vigorously oppose any effort by other states to interfere with the will of Washington voters.”