It was reported that Tester opposed the Supreme Court's Citizens United ruling , where it was decided that corporations and unions had free-speech rights that allow them to donate money to third party political groups. Tester said that "corporations are a whole lot different than people. I don't know corporations that can be put in prison." He went on to say that he didn't believe that the forefathers envisioned corporations enjoying the same or more rights than people, which he thought was happening. Tester doesn't believe that it helps Republicans or Democrats, rather, it undermines our ability to effectively run the United States.