Marriage was traditionally a state issue.

[beam me up scottie]

9. One more time: Bernie didn't want the feds to be able to override the states who made ssm legal.

Jimmy Carter was opposed to making same sex marriage legal nationwide, he deserved to be criticized.

Bernie, otoh, has always been an ally:

32 Years Before Marriage Equality, Bernie Sanders Fought For Gay Rights



But these are only very recent developments. Barack Obama and Hillary Clinton may be champions of same-sex marriage now, but you don’t have to go far back to find a time when they weren’t. And hey, we’re happy to have their evolved support.

Not only did Sanders vote against the Defense of Marriage Act in 1996 which defined marriage as between one man and one woman, signed into law by then-president Bill Clinton — an unpopular position then — a look back at Sanders’ political career shows consistent support of the gay rights movement. Even when it was more than just unpopular, it was downright controversial.

“In our democratic society, it is the responsibility of government to safeguard civil liberties and civil rights — especially the freedom of speech and expression,” Sanders wrote later in a memo. “In a free society, we must all be committed to the mutual respect of each others lifestyle.”

...

“It is my very strong view that a society which proclaims human freedom as its goal, as the United States does, must work unceasingly to end discrimination against all people. I am happy to say that this past year, in Burlington, we have made some important progress by adopting an ordinance which prohibits discrimination in housing. This law will give legal protection not only to welfare recipients, and families with children, the elderly and the handicapped — but to the gay community as well.”

http://www.queerty.com/32-years-before-marriage-equality-bernie-sanders-fought-for-gay-rights-20150719

I was THERE. Do not tell me that Bernie didn't support lgbt people.