Former House Speaker Newt Gingrich has joined with conservatives urging the new congressional GOP majority to replace the head of the bipartisan Congressional Budget Office, claiming that it aided Obamacare architect Jonathan Gruber and the administration’s bid to pass health insurance reform.

“The CBO is more responsible for giving us Obamacare than Jonathan Gruber is, and as culpable as Democrats in Congress or President Obama. CBO was critical to passing the bill, as Gruber attests, because it provided supporters the numbers they needed to justify their claims,” said Gingrich in his latest newsletter.