> While I think the system is in a major need of a cleanup I don't expect it to free up money.

The scenario you're laying out is one in which, for example, a program is currently dispensing $100B in benefits but if everyone who qualified for it actually received the benefits it would be dispensing $200B. A platonic ideal would then have the program costing $200B (i.e. more), but we don't have to beat the platonic ideal, we only have to beat the status quo.

And that program dispensing $100B is spending another e.g. $10B just doing the eligibility determinations. Moreover, the program is then dispensing vouchers that can only be used for specific things, which are less valuable than money.

So if we take the $100B and distribute it as unconditional cash (i.e. a tax credit) instead, the intended recipients get the same $100B as they get now. But the government saves $10B in administrative costs, the recipients save all the time and effort of applying for the program, and $100B in cash is worth more than $100B in vouchers because it e.g. gives you the option to live with your parents while using the money to eventually save up a down payment on your own home rather than being required to use the subsidy to pay rent to a landlord forever.

> I also agree our legal system needs a rewrite. Unfortunately, it's an impossible task because things change.

That doesn't make it an impossible task, it makes it a continuous task. The problem is we haven't been doing it at all, so laws keep accumulating rather than anyone going through and removing the bad ones after things change or we realize that the law was ill-conceived to begin with.

It would probably help quite a bit to make laws expire and have to be renewed every e.g. 10 years. Not only would it invite reconsideration of dusty rules, it would get Congress to spend some time arguing over whether those rules should stay instead of spending all of their time accumulating new ones.

> I would like to see a system in which unclear law is automatically unconstitutional. The defendant should get to choose the most favorable interpretation of what the law says.

This is nominally already the case. There is a rule of interpretation that ambiguous laws are to be construed in favor of a criminal defendant. The problem is judges are human and prosecutors are not, so the prosecutor will purposely bring the precedent-setting case against the most vile scum in the dungeon and force the judge to choose between resolving the ambiguity in favor of the prosecution or letting the child-murderering cartel hitman go free. Then the same precedent gets used against everybody whenever the prosecution couldn't otherwise prove a case against them.

> And, in addition to the purposeful waste you refer to there is purposeful exploitation.

The best solution to this would be to stop forcing the states to fund half of federal programs and let each program be funded entirely by one or the other. The existing system is the federal government screwing the states out of billions of dollars because the states either have to fund a federal program they may not even like or they don't get the federal program but their people still have to pay the taxes that fund it. A ruling that the existing arrangement is unconstitutional wouldn't do a lick of harm.