MADISON, Wis. (AP) -- Republican Scott Walker says he'll lay out his ideas for changing the American health care system in a speech next week in Minnesota. The Wisconsin governor has long opposed the federal overhaul championed by President Barack Obama. That's included a refusal to take federal money to pay for expanding Medicaid coverage in his state, a position Walker has touted on the presidential campaign trail. He plans to appear Tuesday at a suburban Minneapolis manufacturing company to discuss his plans for repeal and what he'd do to replace the federal overhaul. Walker is also scheduled to give a speech later that day at a fundraiser for a Minnesota conservative group.