Massachusetts marriage a key milestone but only the beginning
AG Kathleen Kane did not defend law
Congressman Carlos Bruce says sons support him
Last year brought advances, setbacks across the world
Measure faces possible referendum
'No thoughts' on potential 2016 run for president
Southern Poverty Law Center threatens lawsuit
Ruling to take effect on Friday, pending an appeal
Researchers interviewed 370 people in five countries
One of three judges skeptical of procreation argument
