No, they won't. Tether size is just a tiny fraction of the global US Tresuries market. The ever growing debt is impossible to fund with Tether...
Discussion
"Tether (USDT) has amassed a substantial $72.5 billion in US Treasury bonds ¹. The total value of outstanding U.S. Treasuries as of May 2024 stands at approximately $24.3 trillion ². Comparing these figures, USDT's holdings represent a tiny fraction of the entire U.S. Treasury market. In percentage terms, this equates to roughly 0.0003% of all U.S. Treasuries ³." (Venice.AI)
So why do you think Trump will help?
Because he is not a Socialist.
You might be right that Tether et al are too small. They certainly are now, but they might grow substantially. However, “they” might be planning to use them in a leger capacity than they are now. Important to keep this on your radar: