S&P Global on Monday affirmed its "AA+" credit rating on the U.S., saying the revenue from President Donald Trump's tariffs will offset the fiscal hit from his massive tax-cut and spending bill.

S&P Global warned U.S. government debt credit ratings could "come under pressure" if political developments affect the independence of the Federal Reserve.

S&P said it is maintaining the AA+ rating on the U.S. as it expects tariff revenue will shore up the nation's finances.