You are so wrong on so many levels, itâ(TM)s hard to know where to begin.
Start by reading a bit of history. We have already tried a lot of these ideas, they're old ideas. What we learnt is that super radical policy be it left or right tends to ruin the economy.
First of all, not issuing new debt doesnt mean foreclosing on the old debt. It means not issuing new debt. You use tax revenue (1/4 their abouts at first, less with each passing year) to continue servicing debt.
You misread this no foreclosure is needed, every debt the US government issues has a maturation date when it has to be paid off. We issues new debt every year multiple times a year. What I was saying is that there is a constant wave of maturing US bonds which are constantly being paid off and replaced with new US bonds. Old debt is constantly being repaid with new debt.
Unless you want to ignore that particular new debt, in which case you're ignoring a lot of the new debt. Oh and that 1/4 of the budget you wanted to use to pay it off rather than issuing new debt? That has just disappeared because you disrupted the money markets and laid off a load of federal workers. This means that tax revenues would drop through the floor due to the economic shock. Don't believe me? I'm sure you don't but the history of economic depressions shows us this is what happens.
Secondly, the bone? The government doesnt need $4b a year. Yeah. Fire a million fed workers. We dont need them either. Better to have them involved in productive activities rather than government waste.
You still haven't explained how you'd deal with the economic shock laying off a million workers would inflict, it would be great depression mk II, homeless camps everywhere, etc. They stop working and suddenly you, yes you will lose your job. Why? Because those 1 million federal employees used to pay taxes and spend in stores, you've just rapidly turned them from economically active to inactive. The knock on is that every job including your job relies on other people having money to spend. See Flint MA for what happens when you lose a major employer. It would take a decade for them to get into other productive activities, read up on the great depression (1929–1939) to get a feel for why FDR had to create the New Deal.
Secondly. We spent so much on foreign aid its a joke. ANYTHING to get the waste to stop. Anything to help us watch every dollar we spend. This will work and work well.
You haven't done your research here, or you'd know it's somewhere around 1% of the budget. You'd also know that a lot of that is actually spent in the US funding US citizens to do research in the US. Other bits are spent in places like Mexico and Latin America ensuring they don't deteriorate too much and send a bunch of refugees fleeing over the border. It's a bloody bargain, you get influence over other countries and ensure your neighbours problems don't become yours, what's not to love?