locked in for the term of the bonds. Increases would be felt as bonds come due and are refinanced or for other newly issued bonds.
Fortunately, in March our deficit dropped the most it has in 5 years:
March Deficit Unexpectedly Tumbles To 5 Year Low As DOGE Cracks Down On Democrat Money-Laundering Schemes
https://www.zerohedge.com/markets/march-deficit-unexpectedly-tumbles-5-year-low-doge-cracks-down-democrat-money-laundering