MADISON, Wis. (AP) – Health care advocates say the charges imposed by Gov. Scott Walker’s administration on those who want to help sign people up for health insurance are deterring them from getting involved.  Fees include $39 for a background check, $75 to take a required exam and $150 for online training.  Insurance commission spokesman J.P. Wieske says more than 500 people have gone through free training the department is offering. He defends the fees as a reasonable cost of implementing the law.  But other states with governors who support the Affordable Care Act are not requiring navigators to pay the fees and supporters of the law in Wisconsin say the charges are road blocks to smoothly implementing the law.  The enrollment period for the health insurance exchange begins Oct. 1.