Improper Payments: Recent Efforts to Address Improper Payments and Remaining Challenges, GAO-11-575T, April 15, 2011 Southwest Border: Border Patrol Operations on Federal Lands, GAO-11-573T, April 15, 2011 Status of Fiscal Year 2010 Federal Improper Payments Reporting, GAO-11-443R, March 25, 2011 Continue Reading