The fight over Missouri's congressional map has returned to the U.S. Supreme Court for the third time. The latest petition comes after an appeals court ordered the revival of new districts backed by President Donald Trump. The high court has twice rejected the new map, which aims to help Republicans gain a U.S. House seat in the pivotal midterm elections. The emergency appeal late Tuesday follows an unusual federal lower-court ruling ordering a return to a GOP-friendly map after the Supreme Court halted such a move. The justices previously left in place a decision from Missouri's highest court, which declared the new map invalid and ordered a statewide vote on redistricting.