The US tax brackets automatically adjust for inflation:
For instance, the top tax rate of 37% stays the same, but the amount of income to qualify for it rose from $539,900 to $578,125. Meanwhile, the lowest rate of 10% will apply to individuals making $11,000 or less, up from $10,275 in 2022.
Unlike the British ones where the Chancellor announces them each year and may or may not uprate them with inflation.
The effect of this is that the American system collects less money from fiscal drag than the UK one does. Still not nothing of course. In normal times wages rise faster than inflation, so tax brackets still creep down the income scale. But there’s less fiscal drag in the US system than the Brit one.