JPMorgan CEO Jamie Dimon sent a message to US President Donald Trump at earnings call of America's biggest bank. He warned that tariffs imposed by Trump could pose “significant risks” to the US economy.

Trump has been highly critical of Jerome Powell this year, pressuring him to cut rates. The Fed Chair has said he's awaiting further clarity on inflation.

The C.E.O. of JPMorgan Chase, who has rarely taken on President Trump during his second term, wades into the argument over the Federal Reserve chair.