"But back to the gist of it all: as Bernie has been talking about for many decades and as Warren has begun talking about as the 2020 horse race heats up, the very restrictive cap now in place means that the ultra-rich essentially finish paying off an entire year of Social Security taxes on January 1st, contributing exactly the same amount to the program as someone who earns $132,900 a year. Wealth is by no means taxed at the same rate as work. It’s not even close. Put another way, Jeff Bezos and Bill Gates pay the exact same amount in Social Security taxes as a middle class single or two-income couple living in a modest home in the suburbs. If oligarchic empires were subject to full progressive taxation, the nation’s retirement program could conceivably flourish into perpetuity."

The headline is a merged pair of sequential paragraphs from here.