Congress Debates The 'Billionaire Tax'

The proposal — backed by Senators like Elizabeth Warren — would impose a 15% minimum tax on the most profitable American corporations.

The latest debate in Congress swirls around two questions: First, should the richest Americans have to pay taxes on assets they hold? And second, should the most successful companies have to pay a corporate minimum tax? 

"The tax system is rigged, and letting these giant profitable companies get away with paying nothing has to come to an end," Sen. Elizabeth Warren said.

Let's start with big businesses.