Liberals have opposed virtually every move President Trump has taken on the economy, which makes it inconvenient for them that economic conditions are so universally positive. It is hard to find a single indicator that isn’t pointed in a bullish direction. That’s why the left is now forced to argue that Mr. Trump’s economic success is really the continuation of a trend that began under President Obama.
Take the new book by former Obama adviser Ben Rhodes, “The World as It Is.” Mr. Rhodes quotes President Obama as saying shortly...