President Donald Trump sent the U.S. stock market on a jagged round trip Wednesday after saying he had "talked about the concept of firing" the head of the Federal Reserve. Such a move could help Wall Street get the lower interest rates it loves but would also risk a weakened Fed unable to make the unpopular moves needed to keep inflation under control.

John Kennedy (R-LA) is leading the charge to warn President Donald Trump that his threats against Federal Reserve Chairman Jerome Powell, which have brewed for weeks, would be a disaster, CNN's Phil Mattingly reported on Wednesday.

Futures data from IG suggest a higher open for European bourses, with London's FTSE 100 seen 0.4% higher, France's CAC 40 and Germany's DAX up 0.5%, and Italy's FTSE MIB 0.9% high

Most US and European share indices slid on Tuesday, as US inflation data indicated President Donald Trump's tariffs could be feeding into the American economy.