Tom Norton, a pro-Donald Trump congressional candidate mounting a Republican primary challenge to Rep. John Moolenaar of Michigan, is refusing to file a federally-mandated personal financial disclosure.

Norton, a member of the Army National Guard and veteran of the war in Afghanistan, lists "fiscal responsibility" among his top campaign issues. He argues that "Washington has become a political swamp that sucks energy and money from everyday people around the country."

But when asked why he hadn't yet filed his personal financial disclosures, which are designed to prevent conflicts of interest and increase public accountability, Norton told Insider: "That's none of the federal government's business."