Montana Attorney General Steve Bullock wants Montana campaign finance laws to stay in effect until the US Supreme Court finishes a review of the law.

The federal court ruled that corporate donations for political purposes cannot be limited by government. The ruling was made in 2010 and is the opposite of a Montana law that has banned such corporate spending since 1912.

Recently, the Montana Supreme Court ruled that the Montana law did not violate the US Constitution.

The Montana rule (which was a voter-passed initiative) was brought about, in part, by election battles by huge mining and other corporate interests in the state.

The group, American Tradition Partnership, had earlier asked the Montana Supreme Court to stay its decision until the Supreme Court rules on it. Monday, Bullock filed his motion, noting that such a move would disrupt 100 years of campaign finance law in Montana.