Amazon CEO Jeff Bezos tours the facility at the grand opening of the Amazon Spheres, in Seattle, Washington on January 29, 2018.

Sen. Bernie Sanders' criticism of Amazon peaked Wednesday as he and Rep. Ro Khanna, D-Calif., introduced legislation to tax corporations for every dollar that their low-wage workers receive in government health-care benefits or food stamps.

The bill, pointedly called the Stop Bad Employers by Zeroing Out Subsidies, or Bezos, Act, is aimed at shaming companies like Amazon and Walmart, whose workers rely on public assistance.

For months, Sanders has targeted Amazon, juxtaposing the wealth of CEO Jeff Bezos with reports that Amazon warehouse workers are paid less than industry averages and rely on food stamps.