By Sarah N. Lynch and Doina Chiacu WASHINGTON (Reuters) – The United States sued Idaho on Tuesday to block a state law that it said imposes a “near-absolute ban” on abortion, marking its first legal challenge to state abortion laws since the Supreme Court in June overturned the landmark 1973 Roe v. Wade ruling. The lawsuit, filed in a federal court in Idaho, says the state’s abortion ban violates the Emergency Medical Treatment and Labor Act, a federal law that compels hospitals receiving federal funds to provide emergency medical care. It seeks a preliminary and permanent injunction against t…