Congresswoman Alexandria Ocasio-Cortez said she felt compelled to endorse Senator Bernie Sanders in the Democratic presidential primary because it was the “most authentic decision to let people know how I feel.” The rising progressive star spoke to CBS News’ Nikole Killion in an interview before the rally in Queens, New York, on Saturday where Ocasio-Cortez formally endorsed Sanders.

Ocasio-Cortez acknowledged that it was early to make an endorsement in the primary process, but she said her support was not motivated by political strategy. Sunday’s rally is Sanders’ first campaign event since returning to the trail after suffering from a heart attack on October 2.

“Some folks make decision by political calculations and looking at strategy but I think for me, once I decide what I want to do, it’s just the most authentic decision to let people know how I feel,” Ocasio-Cortez told Killion. She also reflected on her meteoric rise to politics, from a bartender to one of the best-known Democrats in the House.

“Last February, I was waitressing at a restaurant in downtown Manhattan, and I didn’t have health insurance, and wasn’t being paid a living wage, and facing sexual harassment at work,” Ocasio-Cortez said. “To think I’m now on the other side of this as a member of Congress, and understanding pressures on inside to conform — It’s astounded me, frankly, that the senator has been there fighting for me long before I got to the halls of Congress, and fighting for people like me.”

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