The United States Treasury just said it may buy back up to $95 billion of its own bonds this quarter. But that number is a ceiling, not a promise.
Up to $70 billion is for liquidity support. That means buying older bonds that are hard to trade so dealers can keep the market working.
Up to $25 billion is for cash management in short bonds from about 1 month to 2 years.
This is not the Federal Reserve printing money. The Treasury is swapping some old debt for cash as part of how it runs the debt market.