President delivers final annual speech before joint session of Congress
Obergefell 'blown away' after learning of invite from first lady
Measure fails on party-line vote of 239-178
President to deliver address on Tuesday
President wipes away tears recalling first-grade victims in 2012
2016 hopeful says answer is a 'long conversation'
2016 hopeful took action despite opposition to gay nuptials
Republican hopeful says 2013 decision was 'extraconstitutional'
2016 hopeful relatively pro-LGBT among Republican candidates
2016 hopefuls seek policy based on individual risk