U.S. Rep. Tulsi Gabbard of Hawaii announced Sunday that she will resign as vice-chair of the Democratic National Committee and endorse Bernie Sanders for president.

“I think it’s most important for us, as we look at our choices as to who our next commander in chief will be, is to recognize the necessity to have a commander in chief who has foresight, who exercises good judgment,” Gabbard said on MSNBC‘s “Meet the Press.”

According to an email obtained by Politico, Gabbard told her fellow DNC officers that “after much thought and consideration, I’ve decided I cannot remain neutral and sit on the sidelines any longer.”

“There is a clear contrast between our two candidates with regard to my strong belief that we must end the interventionist, regime change policies that have cost us so much,” she wrote. “This is not just another ‘issue.’ This is THE issue, and it’s deeply personal to me. This is why I’ve decided to resign as Vice Chair of the DNC so that I can support Bernie Sanders in his efforts to earn the Democratic nomination in the 2016 presidential race.”