http://www.crs.gov
http://www.ncsl.org/issuesresearch/labor/state-divestiture-enacted-laws-legislation.aspx
http://www.state.gov/documents/organization/195768.pdf
http://www.ilga.gov/legislation/
http://www.justice.gov/osg/briefs/2011/2pet/6invit/2010-1139.pet.ami.inv.pdf
http://www.ncsl.org/default.aspx?TabId=20933
http://crr.bc.edu/images/stories/Briefs/ib_7-12.pdf
http://www.gpo.gov/fdsys/pkg/CHRG-110hhrg41178/pdf/CHRG110hhrg41178.pdf