From Reuters A Republican congressman on Thursday introduced legislation to allow online gambling on a federal level, which he says will give consumers more uniformity than legalizing it on a state-by-state basis. The move by Representative Peter King of New York follows industry lobbying for federal legislation to provide a larger, more liquid market across state lines, attracting more gamblers. U.S. casinos operators like MGM Resorts International and Caesars Entertainment Corp plan to launch Internet operations in states like New Jersey, which recently passed online gambling legislation. “A common federal standard will ensure strong protections for consumers, protect against problem…