Sen. Elizabeth Warren (D-MA) is proposing a 15% minimum tax for corporations earning over $1 billion in profits.

A report from the progressive lawmaker’s office argued that large companies have “rigged” the tax code, permitting armies of accountants to avoid paying federal taxes.

In 2020, DISH Network — one of the most profitable companies in the United States — reported $2.6 billion in global profits and paid their founder and chairman almost $95 million. But the company paid no federal income tax and even received a $231 million tax refund from the U.S. government. That same year, the massive defense conglomerate Northrop Grumman made $3.7 billion. Its effective tax rate? 6.7% — less than one-third of the statutory corporate tax rate of 21%.