John Yarmuth actually said...

Thank you very much, Mr. Chairman. Once again, thanks to all the witnesses for spending your morning with us.

What is not appropriate, as the Chairman mentioned, is to launch ad hominem attacks to undermine the credibility of CBO.

I think it would be valuable to hear from these agencies and others as we consider priorities for the 2019 budget.

CBO has a regimented, well-documented, and consistent process to produce work that is accurate, fair, and nonpartisan.