To tell whether a proposed budget will produce a deficit, each budget is “scored.
To assure independence, one of two organizations do the scoring: The Joint Committee on Taxation or the Congressional Budget Office.
The President’s Office of Management and Budget is a political office, which provides a political answer, not an impartial estimate; so, it’s not useful for scoring.
under the cover of rhetoric (e.g. “real economists”, “outside help”), Trump/Republicans are working to ignore The Joint Committee on Taxation or the Congressional Budget Office and to select partisans to score their budget & tax reform, .
Why? “Steven Mnuchin is “concerned that some of the models wont attribute enough growth in the dynamic scoring.”
Translation: Trump/Republicans know all reputable models will show their tax reform produces unprecedented deficits.