By Lawrence Hurley WASHINGTON (Reuters) -The U.S. Supreme Court on Tuesday turned away a challenge to Maine’s COVID-19 vaccine mandate for healthcare workers, rebuffing for the second time a group of plaintiffs who sought a religious exemption. The justices rejected a request made on behalf of unnamed plaintiffs identifying themselves as Maine healthcare workers who objected to the vaccinations on religious grounds. The court in November rejected an emergency request by the same plaintiffs seeking to prevent Maine from enforcing the mandate against them. They are represented by a Christian leg…