Is Roseanne Barr fit to be president of the United States? Well, if you ask her...

When documentary filmmaker Eric Weinrib set out to follow comedian, actress and self-proclaimed “domestic goddess” Roseanne Barr on her 2012 campaign for president, he figured the whole thing would probably be a goof. So, for that matter, did most people.

“I expected it to be a more satirical campaign...