Kirk becomes second sitting Republican in the upper house to do so
Announcement coincides with expected introduction of bill to allow gays to tie the knot in Delaware
Kate gives a shout out to Freedom To Marry's Evan Wolfson
Tyler, Olson filed first lawsuit to challenge ban in 2004
Measure is widely expected to pass
Whitman-Walker Health, Casa Ruby among groups that took part in the event
Only eight Senate Democrats have yet to publicly endorse nuptials for gays and lesbians
Anti-trans policy established in 1981
What do you think of Google founder's somewhat homophobic insinuation?
ABC News profile features star speaking of lesbian daughter
