"The biggest welfare cheat in America is Walmart," Sanders said.

The comments were related to the Sanders' goal to eventually increase the federal minimum wage to $15 per hour, provide affordable health care and equal wages for men and women.

"These are issues millions and millions of people are wrestling with everyday," Sanders said of current wages in the United States.

The Vermont senator also said he wants to focus on investing in the country's youth and jobs, instead of spending money on prisons.

"I want a country that has the best educated population on earth," he said.

And for people not suited for post-secondary education, Sanders said he wants to invest in people who require vocational or trade skills.

Allie Logan, 19, of Sioux City, attended the rally and said she supports Sanders because of his a plans for America's youth and to address poverty.

"I really like his plan to help the poor people, and I really like his college plan," Logan said.

John Guagliardo, 27, of Vermillion, South Dakota, said Sanders can improve civil and human rights in the country.