the US has levers to pull to pay the debt

Based on that list, here's the levers:

1. All your land now belongs to the USG, and your labor to extract those metals for us. Hi, slave.
2. All your land now belongs to the USG again, and your labor to extract those minerals for us. Hi, slave.
3. Nice house you got there. It is now ours. If you want to live here, pay rent. Hi, tenant.
4. We already took the land but we're taking it again. Shoo. Get off our land.
5. Heya, this is JP calling to inform you that we just handed over your entire stonks portfolio to the USG. They said we have to.
6. Huh? You want energy for your fridge? Sorry, no energy. It was all taken by China because we owe them.

TLDR; don't give them any ideas, because before you know it, your life is forfeited and you will own nothing and you will not be happy, because you died from spoiled food as the electricity needed to use your fridge was sold to China.