A Standard & Poor’s director said for the first time Thursday that one reason the United States lost its triple-A credit rating was that several lawmakers expressed skepticism about the serious consequences of a credit default — a position put forth by some Republicans.

Without specifically mentioning Republicans, S&P senior director Joydeep Mukherji said the stability and effectiveness of American political institutions were undermined by the fact that “people in the political arena were even talking about a potential default,” Mukherji said.

“That a country even has such voices, albeit a minority, is something notable,” he added. “This kind of rhetoric is not common amongst AAA sovereigns.”