The black 25-year-old Miss DC works for the U.S. Nuclear Regulatory Commission and beat out Miss New Jersey for the crown.
See, McCullough explained that she doesn't consider herself a "feminist" and that people do not have a "right" to health care. We are just as tough as men.
Miss New Jersey Chhavi Verg, of Edison, was the first runner-up.
Representing the District of Columbia-and heralded as "one of the most intelligent contestants in recent memory"-McCullough also shared her thoughts on feminism during the course of the competition".
McCullough also riled women's rights activists with her answer on feminism, saying she'd prefer to use her made-up term "equalism" instead. For me, it has been one of the most empowering experiences because I have met so many empowered women, but at the same time, I have also been a victim of cyberbullying like numerous contestants with me standing on this stage. Her win means she will represent the USA at the Miss Universe contest.
Many on Twitter criticized her responses while others rushed to McCullough's defense.More news: World Health Organization eyes vaccine trial for Ebola-hit DR Congo
Then the Miss District of Columbia said, "I don't want to call myself a feminist". This is the second year in a row that the victor is emerging from the same state, D.C. District of Columbia. She said that it is a privilege in the United States.
McCullough, 25, is now working as a scientist at the United States Nuclear Regulatory Commission. When asked if she felt healthcare was a privilege or a right, McCullough gave an answer that had some people scratching their heads.
"I'm definitely going to say it's a privilege", McCullough answered.
"It is an unbelievable opportunity for this young woman to shine light on what it means to be a strong, confident, powerful young woman today", she told Inside Edition. "I've seen and witnessed firsthand the impact that women have".
Barber, an Army Reserve officer and IT analyst, said at the time: "As a woman in the United States Army, I think it was an incredible job by our government to allow women to integrate into every branch of the military".