Alaska election officials should not be barred from implementing the new redistricting plan because a requirement that the plan be approved by the federal government is unconstitutional, attorneys for the state contend. A federal three-judge panel is scheduled to hear arguments Thursday in the case brought by several Alaska Natives, who want the state barred from implementing the plan until the U.S. Justice Department weighs in on it. Justice has about a month yet to do so. Alaska’s primary is scheduled for Aug. 28. A divided Alaska Supreme Court in May approved use of the plan for this year’s elections, but any plan must pass muster both with the courts and Justice.