Republicans Sought to Undercut an Unfavorable Analysis of the Tax Plan

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As the Senate prepared to vote on its tax bill, Republican Senators criticized the nonpartisan Joint Committee on Taxation
over its analysis that the bill would increase the deficit by $1 trillion.

WASHINGTON — A Republican requirement that Congress consider the full cost of major legislation threatened to derail the party’s $1.5 trillion tax rewrite last week. So lawmakers went on the offensive to discredit the agency performing the analysis.

In 2015, Republicans changed the budget rules in Congress so that official scorekeepers would be required to analyze the potential economic impact of major legislation when determining how it would affect federal revenues.

But on Thursday, hours before they were set to vote on the largest tax cut Congress has considered in years, Senate Republicans opened an assault on that scorekeeper, the Joint Committee on Taxation, and its analysis, which showed the Senate plan would not, as lawmakers contended, pay for itself but would add $1 trillion to the federal budget deficit.

Public statements and messaging documents obtained by The New York Times show a concerted push by Republican lawmakers to discredit a nonpartisan agency they had long praised. Party leaders circulated two pages of “response points” that declared “the substance, timing and growth assumptions of J.C.T.’s ‘dynamic’ score are suspect.” Among their arguments was that the joint committee was using “consistently wrong” growth models to assess the effect the tax cuts would have on hiring, wages and investment.

https://www.nytimes.com/2017/12/04/us/politics/republicans-joint-committee-on-taxation-estimate.html