Donald Trump has pursued two main economic policies. On taxes, he has been an orthodox Republican, pushing through big tax cuts for corporations and the wealthy, which his administration promised would lead to a huge surge in business investment. On trade, he has broken with his party’s free(ish) trade policies, imposing large tariffs that he promised would lead to a revival of U.S. manufacturing.

On Wednesday, the Federal Reserve cut interest rates, even though the unemployment rate is low and overall economic growth remains decent, though not great. According to Jay Powell, the Fed’s chairman, the goal was to take out some insurance against worrying hints of a futu re slowdown — in particular, weakness in business investment, which fell in the most recent quarter, and manufacturing, which has been declining since the beginning of the year.

Obviously Powell couldn’t say in so many words that Trumponomics has been a big flop, but that was the subtext of his remarks. And Trump’s frantic efforts to bully the Fed into bigger cuts are an implicit admission of the same thing.

To be fair, the economy remains pretty strong, which isn’t really a surprise given the G.O.P.’s willingness to run huge budget deficits as long as Democrats don’t hold the White House. As I wrote three days after the 2016 election — after the shock had worn off — “It’s at least possible that bigger budget deficits will, if anything, strengthen the economy briefly.” And that’s pretty much what happened: There was a bit of a bump in 2018, but at this point we’ve basically returned to pre-Trump rates of growth.