http://www.crs.gov
http://www.politico.com/story/2013/04/obama-aligns-with-gop-on-tax-extenders-90170.html
http://www.whitehouse.gov/sites/default/files/omb/budget/fy2014/assets/budget.pdf
http://www.finance.senate.gov/hearings/hearing
http://www.gao.gov/new.items/d09446.pdf
http://www.gao.gov/assets/320/315920.pdf
http://www.finance.senate.gov/hearings/hearing/?id=b1604e2e-5056-a032-52ff-dd661f9280f6
http://waysandmeans.house.gov/uploadedfiles/marron.pdf
http://waysandmeans.house.gov/uploadedfiles/marron.pdf
http://www.finance.senate.gov/hearings/hearing
http://waysandmeans.house.gov/uploadedfiles/white.pdf
http://www.cbo.gov/publication/44172
http://www.cbo.gov/publication/43547