The U.S. economy is breathing a little easier after the International Longshoremen's Association reached a tentative agreement last week with the United States Maritime Alliance. The short-lived dockworkers strike reignited a debate over whether the president ought to intervene, invoking an old law on the books called the Taft-Hartley Act. On today's show, we explain what the Taft-Hartley Act is, why it was created and why it's still scorned by unions.