Cedar Rapids Gazette: For the second time in less than a year, a federal court has halted enforcement of an Iowa law that backers say is needed to protect farms from deceptive trespassers but critics say stifles animal welfare advocates from exposing abuses. U.S. District Judge James Gritzner issued a preliminary injunction Monday to allow animal-rights activists, public-interest groups and civil libertarians to proceed with a lawsuit challenging the constitutionality of Senate File 519 — more commonly known as Iowa’s ag-gag rule.