(Seattle, WA) -- A King County Superior Court judge is slated to hear arguments today regarding Initiative 1366, which will cut the Washington state sales tax by a penny in mid-April unless the Legislature puts a tax-limiting constitutional amendment on the ballot for November. Judge William Downing will hear arguments on the legality of I-1366, which passed with 51-and-a-half-percent of the statewide vote in November. Activist Tim Eyman, who spearheaded the initiative, told the Everett "Herald" he's confident the lawsuit against the measure will be dismissed. Opponents of the initiative argue it violates state law that bars ballot measures from addressing multiple unrelated subjects.