Republican U.S. Rep. Michele Bachmann has again declined to endorse Mitt Romney, the party's presumptive presidential nominee, even after he swept five primaries Tuesday night.

During an interview with Fox News host Greta Van Susteren, Bachmann spoke about Romney and her efforts to unify the tea party to prevent President Barack Obama from winning re-election.

Here are several exchanges from the interview during that aired Tuesday night during "On the Record."