The idea you have is nice, but congress doesn't pass real budgets any more. That means that there is a lot more ability to make the money slosh around.
We are wildly far beyond strict constitutionalism. This has been a trap for conservative causes for a very long time. We are now playing the game the same way the left does: win and govern.
Laws have never encumbered humans. We're governed by social norms and those have been destroyed: massive immigration, sexual mutilation of children, and wanton spending of US taxpayer dollars.