::The NYT source is by far the most mainstream least controversial source provided, albeit left leaning. Modification of an existing sentence, without making it any longer or shorter (not including reference(s)), would update the context, and can be bundled with the existing source per WP:CITEBUNDLE. Expansion would lead to WP:UNDUE. 
 ::Also if this is allowed, perhaps the growth of the total federal budget and growth of entitlement spending can be shoehorned somewhere. But IMHO such things belong in sub-articles and no need to add that here in any significant detail.