On economy, Trump picks a fight with Obama he cannot win

Yesterday morning, Barack Obama published a tweet marking an important anniversary. Alongside an image of a bill bearing his signature, the former president wrote, "Eleven years ago today, near the bottom of the worst recession in generations, I signed the Recovery Act, paving the way for more than a decade of economic growth and the longest streak of job creation in American history."

The Democrat's message had the benefit of being true. Roughly a month into his presidency, with the economy falling off a cliff and the nation hemorrhaging jobs,...