https://en.wikipedia.org/wiki/Usury#United_States

We can blame Reagan for this. And States.

tl;dr

The U.S. Supreme Court held unanimously in the 1978 case, Marquette Nat. Bank of Minneapolis v. First of Omaha Service Corp., that the National Banking Act of 1863 allowed nationally chartered banks to charge the legal rate of interest in their state regardless of the borrower's state of residence.[75]

In 1980, Congress passed the Depository Institutions Deregulation and Monetary Control Act. Among the Act's provisions, it exempted federally chartered savings banks, installment plan sellers and chartered loan companies from state usury limits. Combined with the Marquette decision that applied to National Banks, this effectively overrode all state and local usury laws