Wisconsin Governor Scott Walker will not challenge any of the more than one million signatures gathered by opponents to force a vote to recall the controversial Republican, saying his campaign did not have enough time to review them. Walker faced a deadline Monday to file challenges after a Dane County judge granted him a 20-day extension beyond the 10 days allotted under state law. Walker also sought an additional two weeks but was turned down. "We faced an impossible timeline," Walker spokeswoman Ciara Matthews told wispolitics.com. Walker has been in office only a year but he angered Democrats and union members by pushing through the state legislature a law stripping public sector unions of many of their powers. Republicans said the law was necessary to improve the condition of state finances but Democrats accuse him of "union busting." Tens of thousands of people marched on the state capital to protest last winter.