Jonathan Gruber, the Obamacare consultant who has become a lightning rod for critics of the health care law for his comments about “the stupidity of the American voter,” apologized again on Capitol Hill Tuesday.

Republican Chairman Darrell Issa, R-Calif., in opening remarks, called the comments “deceitful,” before asking the Massachusetts Institute of Technology economist who helped write the Affordable Care Act if he was stupid.

“Does MIT employ stupid people?” Issa said.

“Not to my knowledge,” Gruber replied.