It’s natural for decision-makers grappling with a new crisis to dust off ideas tried in the last one, whether they were good ideas or bad. Here’s a bad idea, unearthed by President Trump from a decade ago: Cutting the payroll tax to goose the economy.

A payroll tax cut was part of the arsenal used by President Obama to fight the Great Recession in 2011. It was a bad idea then, and a bad idea now.