Missouri’s top election official has rejected a petition for a statewide referendum on new congressional districts backed by President Donald Trump. Supporters submitted hundreds of thousands of signatures to try to force a November election on a new U.S. House map approved by the Republican-led state Legislature. But Republican Secretary of State Denny Hoskins asserted Tuesday that the petition is unconstitutional because congressional redistricting plans cannot be subject to voter referendums. A group backing the referendum effort plans to challenge Hoskins’ decision in court. Missouri was the second Republican-led state, after Texas, to respond to Trump’s call to redraw congressional districts to the GOP’s advantage.