For individuals looking to hide their wealth, there's no country more helpful than the United States.

That's according to research by the Tax Justice Network, which ranked countries by the extent to which their financial and legal systems help people and entities conceal ownership of assets. According to this measure, the U.S. has increased its supply of financial secrecy to the world by almost a third since 2020, earning it the worst rating since rankings began in 2009.

"These rankings show how corrupt actors are weaponizing our financial system against democracy," said Ian Gary, executive director at the U.S.-based Financial Accountability and Corporate Transparency Coalition. "The U.S. must support more reciprocal automatic information exchange between countries."