Billionaire investor Ray Dalio is watching closely the "risky" U.S. fiscal situation.

"We're going to have a debt crisis in this country," the founder of hedge fund Bridgewater Associates said in an interview with CNBC's Sara Eisen that aired Thursday. The two were speaking at a fireside chat at the Managed Funds Association. "How fast it transpires, I think, is going to be a function of that supply-demand issue, so I'm watching that very closely."