A spokesman for President Barack Obama on Tuesday criticized Mitt Romney's record on gay rights as “regressive.”

The verbal skirmish comes just days after Vice President Joe Biden said he was “comfortable” with gay couples marrying, prompting Romney surrogates to criticize Obama's stance on the issue.

“The President has done more to advance gay rights than any other president – from securing hospital visitation and medical decision-making rights for gay partners, to repealing Don't Ask Don't Tell, to advancing equal rights and benefits for gays and lesbians," spokesman Ben LaBolt said in a statement, POLITICO.com reported.

"Governor Romney went from promising to be to the left of Ted Kennedy on gay rights to working to enshrine discrimination into the Constitution by passing a federal marriage amendment, personally funding efforts to roll back equal rights for gays and lesbians in states, and making clear he would have kept Don't Ask, Don't Tell in place. The country has moved forward since 1994, when Governor Romney was supposedly an advocate on these issues, yet Governor Romney has moved backwards. He would turn back the clock on all of the progress this President has made to advance equal rights.”

“On the issue important to gays and lesbians, Governor Romney hasn't evolved – he has regressed,” he added.