SACRAMENTO, Calif. (AP) - An anti-tax group is suing state officials in an effort to block an advisory ballot measure that seeks to overturn the U.S. Supreme Court's Citizens United campaign finance decision. The lawsuit filed Tuesday by the Howard Jarvis Taxpayers Association comes a week after Gov. Jerry Brown let SB1272 become law without his signature. The bill by Democratic Sen. Ted Lieu of Torrance puts a nonbinding measure on the November ballot asking voters if they want a federal constitutional amendment to restrict corporate campaign giving. The 2010 ruling allowed unlimited corporate spending in elections. The suit filed in the Third District Court of Appeal in Sacramento argues that such advisory measures are not a proper use of the ballot.