President Donald Trump on Monday kept up his verbal assault on Federal Reserve Chair Jerome Powell over the Fed's refusal for now to further cut interest rates, rattling financial markets growing ever more fearful that Trump may ultimately try to fire the U.

Stocks fell on Monday, with energy shares among the biggest losers, as President Donald Trump ramped up his attacks on Federal Reserve Chairman Jerome Powell.

Wall Street's main indexes opened down on Monday after U.S. President Donald Trump's renewed attacks against Federal Reserve Chair Jerome Powell sparked concerns about the central bank's independence and rattled investors grappling with an escalating trade war.