Monday's decision by the Federal Reserve's top bank regulator to step down from his job — but not from the Fed entirely — is simultaneously less and more than meets the eye. Why it matters: Michael Barr's self-demotion clears the way for President-elect Trump to appoint a vice chair for supervision.

Michael Barr, the Federal Reserve's top regulatory cop, said he will step down on Feb. 28, in a surprise move that will avert a potentially messy legal fight with President-elect Donald Trump who is now free to replace him with an official of his choosing.

Federal Reserve Vice Chair of Supervision Michael Barr's decision on Monday to resign early from his regulatory oversight role sets up an early test of how Donald Trump will try to shape the U.S. central bank during his second term as president.