The Des Moines Register offers this report, which begins: “Controversy over Iowa’s election laws heated up this morning when Republicans threatened to file a lawsuit and called for Iowa Secretary of State Chet Culver’s resignation, just eight days before Election Day. At issue is the requirement that voters registering by mail check a box confirming U.S. citizenship. Republicans allege Culver, a Democrat, is violating state and federal election laws by deciding last week that he’ll allow Iowa voters to bypass that requirement.”