The Obama administration is on a collision course with the state of Kansas over a new law that claims to nullify federal gun controls.

Attorney General Eric Holder has threatened litigation against Kansas over the law in what could the opening salvo of a blockbuster legal battle with national ramifications.

“This is definitely a case that could make it to the Supreme Court,” Kansas Secretary of State Kris Kobach said Friday afternoon. “There is nothing symbolic about this law.”

Kobach, a former constitutional law professor, helped craft the statute, which bars the federal government from regulating guns and ammunition manufactured and stored within Kansas state lines.