By not printing money like crazy. Or just by simply defaulting or restructuring its debt because it wishes. Next question!
P.S. Printing press is not magic.
Without the government sector running a net deficit, how does the private sector get more liability free dollars? Loans create deposits, but this nets to zero (mostly.) Of course, banks loan based on the credit worthiness of the person. That person has to acquire savings from another persons spending..
Oh, the so so so smart arguments of the MMT. And by smart I mean of course - completely retarded.
First of all "savings" is a stock. I can acquire savings by building something on my yard I don't need your stinking government to do that and neither does anyone else.
Now, you probably meant "saving" which is a flow, again no monetary transaction needs to take place for saving to occur. Only thing that has to happen is for the production to be measured. So you didn't mean this either.
What you meant is "net private saving", that is the deficit by definition for a global economy. Okay cool... and this tells us what exactly about the real economy? Why is this needed? Oh wait it isn't. Only reason why it's needed for an economy is because socialist MMTers can't stop salivating over their deficits and socialist revolution.
MMTers are the ultimate economic "gotchas". Completely clueless how economics actually works. These guys could not physically run a lemonade stand if their life dependent on it. That is what we are dealing with. Unfortunately their ability is as great as their honesty.