Lawyers argued against Proposition 8 before the U.S. Supreme Court
Same-sex couples on Monday gathered to await marriage decisions
Standing issues make up considerable portion of questioning at court hearing
Showdown at the Supreme Court draws supporters, opponents from all over the U.S.
Lawyers argue measure labels LGBT families as 'second-rate'
Obama says DOJ 'looking' at filing a brief
Could this be the end for the Defense of Marriage Act; California's Proposition 8?
Carney defers questions to Justice Department
Olson hopes U.S. gov't will take part in lawsuit
Should LGBT groups take cash from conservatives?
