Robinson says she had to 'deny truths' to continue service
Vice president speaks to mother of transgender pageant winner
Decision could immediately allow same-sex couples to wed in California
President optimistic, but says issue should be left at 'the state level'
Brief says Second Circuit 'most appropriate vehicle' for justices
Group started by Republican businessman Paul Singer
President has now weighed in on all four pending initiatives
Says legislative action needed to fully fix inequities
No commitments on specific legislation
Move comes despite GOP support for Federal Marriage Amendment