http://www.crs.gov
http://www.supremecourt.gov/opinions/12pdf/12-307_6j37.pdf
http://www.opm.gov/retirement-services/publications-forms/benefits-administration-letters/2013/13203.pdf
http://www.supremecourt.gov/opinions/
http://www.census.gov/acs/www/about_the_survey/forms_and_instructions/
http://www.census.gov/
http://www.irs.gov/uac/Answers-to-Frequently-Asked-Questions-for-Same-SexCouples
http://www.irs.gov/uac/Newsroom/IRS-Statement-on-theSupreme-Court-Decision-on-the-Defense-of-Marriage-Act
http://www.census.gov/hhes/samesex/data/acs.html
http://www.taxpolicycenter.org/taxtopics/
http://www.cbo.gov/publication/15740
http://www.irs.gov/uac/SOI-Tax-Stats%E2%80%94IndividualStatistical-Tables-by-Filing-Status
http://taxpolicycenter.org/taxfacts/
http://www.irs.gov/pub/irs-drop/rp-13-15.pdf
http://www.cbo.gov/publication/15740
http://www.cbo.gov/publication/15740