The U.S. central bank is having its first meeting with the new chair, Kevin Worsh, backed by Donald Trump.

Markets are almost certain that the Fed won't change rates. They see about a 99.6% chance that rates will stay the same. So, what's key isn't the decision, but what they say afterward.

Why it matters:

• Trump wants to lower rates to pump up the economy

• Inflation in the U.S. has climbed back up to nearly 4.2%

• The Fed's speech will set the market's expectations for the coming months

Possible effects:

• If Worsh hints at rate cuts - crypto and stocks pump

• If he takes a hard stance on inflation - markets might crash or get weak