Warren Buffett just said he's not worried about Fitch's downgrade of the US credit rating

“There are some things people shouldn’t worry about,” he said. “This is one.”

“Berkshire bought $10 billion in U.S. Treasurys last Monday. We bought $10 billion in Treasurys this Monday. And the only question for next Monday is whether we will buy $10 billion in 3-month or 6-month” T-bills, Buffett told CNBC.

Buffett did note that the concerns are valid though but not enough to change his views on U.S. Treasurys and the dollar