Since a revolving door was installed at the entrance to the West Wing of the White House, it has been difficult to keep track of the comings and goings in America’s corridors of power. Anything written about the Trump administration’s personnel and policies may be invalid before it is published.

At least for the time being, however, the key economic-policy actors remain in place. Steve Mnuchin is still Treasury Secretary and has not been mentioned in dispatches during the latest power struggles. Gary Cohn continues to chair the National Economic Council, though he is reported to be unhappy about some of the president’s statements on non-economic issues. And of course Janet Yellen is still at the helm at the Federal Reserve, at least until February next year.