MADISON, Wis. (AP) – Gov. Scott Walker still won’t say whether he will sign a bill making it harder to force public schools to drop American Indian nicknames. Walker was asked about the measure Thursday, but he says it is “not on my radar.” The Senate passed the Republican-sponsored bill Tuesday after it cleared the Assembly last month. Democrats have attacked the measure as a way to institutionalize racism in schools, while Republican supporters say it establishes a more fair system for deciding whether race-based nicknames are appropriate. The bill requires anyone offended by a school mascot to gather signatures from 10 percent of people living in the school district before a complaint can be brought. It also changes the burden of proof from the district to the person bringing the complaint.