New York City may ban subcontracting delivery workers to help the union. Sooner or later in today's America, if you are successful in business you will be targeted as guilty of some alleged political sin. It doesn't matter how many jobs you create or what services you provide. Ask Amazon.

On Monday New York City Mayor Zohran Mamdani endorsed the Teamsters-backed Delivery Protection Act. Introduced by Democratic Socialists of America council member Tiffany Cabán, the bill would force Amazon to reclassify subcontractors and workers in its delivery network as employees. It could also potentially hit other delivery companies such as FedEx.

The Teamsters and its left-wing allies are using New York City to test-drive the ban on subcontracting, which they hope to take nationwide. Mr. Mamdani's office says Amazon and others use subcontractors “to shield them from responsibility,” which “leaves workers vulnerable and corporations free to avoid accountability for reckless conditions on city streets.”

That's a misdirection. Amazon's last-mile delivery network relies on some 40 subcontractors, which employ more than 5,000 workers. This sophisticated network can get goods to your doorstop in hours and provides flexibility for workers with irregular schedules like college students and home caretakers.