Are you sure you want to delete this post?
First of all, I’m describing how it works today. The govt has operational capacity to spend in an unlimited financial capacity. So I don’t know what you mean by “MMT money.” All govt spending is done by crediting accounts in the banking system (even in the case of someone who cashed their Social Security check at the check cashing store).
Congress decides what the federal government spends, in terms of quantity, prices paid, and what for.
I think the nation would be better served by government spending on Democratic priorities, ie healthcare, welfare, job guarantee, housing, infrastructure, social security, etc. and massively cutting taxes on the working lower classes.