US President Barack Obama on Thursday publicly endorsed same sex marriage, putting an end to days of speculation about his "evolving views" on the issue. In an interview to the ABC's Good Morning America to be aired on Thursday, Obama said his views on the issue have evolved now and he thinks that "same-sex couples should be able to get married." It may be termed as a historic moment in the civil rights history of America, as no other sitting President has earlier supported marriage between people of the same sex.