Independent Vermont Senator Bernie Sanders warned on Monday that the United States may have reached a "tipping point" where the "billionaire class" could block any presidential candidates who were fighting for the working class.

Sanders explained during an interview on CNN that he had been traveling the country to determine if he would have the necessary support for a presidential run in 2016.

"I'm giving some thought to it," he said. "Taking on the billionaire class, and Wall Street, and the Koch brothers is not an easy task."

"How are you going to get elected president if you take on the billionaire class?" CNN host Chris Cuomo snarked. "Don't you watch the elections?"

"I'm going to be very honest with you," Sanders replied. "We may have reached the tipping point where candidates who are fighting for the working class and the middle class of this country may not be able do it anymore because of the power of the billionaire class."

"That's the simple reality," he continued. "And I have got to ascertain -- if I do it, I want to do it well. If I do it, I know that I will need millions of people engaged in a real grassroots campaign to take on big money, and to fight for an agenda, a jobs program, raising the minimum wage, pay equity for women, dealing with climate change, all of these things."

"And I have to ascertain what kind of support there is out there."