Executive summaryUnited States (US) President Joe Biden's FY2023 Budget released 28 March folds most of the House-passed Build Back Better Act (BBBA) into the baseline and assumes it has been enacted, a move likely intended to avoid upsetting any blossoming negotiations later this spring or summer on a post-BBBA reconciliation bill after the House measure stalled in the Senate. This means most tax-related spending and other BBBA provisions are omitted; other major tax increase proposals are included, even though Congress has little appetite for passing some of them or they face firm opposition from one or more key senators in...