MADISON, Wis. (AP) — Republicans have quietly introduced three bills that would require food stamp users to buy healthy food and applicants for state job training programs and unemployment benefits in certain fields to undergo drug screening. Rep. Robert Brooks’ bill would require food stamp users to use at least two-thirds of their monthly allotment to purchase nutritional foods. They would be banned from purchasing crab, lobster or shrimp. Rep. Mike Rohrkaste, meanwhile, has introduced a bill that would require applicants for a number of job training programs to submit to drug screening. He’s got another bill that would require unemployment benefit applicants to submit to drug screens if they want work in occupations that require drug tests.