From Iron Knee at Political Irony:
Even before the Congressional Budget Office (CBO) came out with their analysis of the repeal of Obamacare, Trump and the Republicans started attacking the CBO. Congressman David Brat (R-VA) even said “CBO has scored everything wrong forever so they’re a minor concern.”
So even though the CBO is non-partisan and its director is a conservative economist appointed by Republicans, the Republicans said that they would prefer the numbers that would come out of the White House Office of Management and Budget (OMB), which is totally partisan.
Ironically, the report from the OMB is out, and it is even worse than the report from the CBO.