The richest 0.00025 percent owns more wealth than bottom 150 million Americans: study

As survey data continues to show that raising taxes on the wealthy is extremely popular among the U.S. public, new research by inequality expert and University of California, Berkeley economist Gabriel Zucman found that the richest 0.00025 percent of the American population now owns more wealth than the 150 million adults in the bottom 60 percent.

Zucman, who helped Sen. Elizabeth Warren (D-Mass.) develop her "Ultra-Millionaire Tax" proposal, observed in a working paper (pdf) that "U.S. wealth concentration seems to have returned to levels last seen during the Roaring Twenties."

According to Zucman's research, the richest 0.00025 percent—just 400 Americans—have seen their share of America's national wealth triple since the 1980s, while the wealth of much of the U.S. population has stagnated or declined.

As the Washington Post's Christopher Ingraham noted in a breakdown of Zucman's research, adults in the bottom 60 percent of the wealth distribution "saw their share of the nation's wealth fall from 5.7 percent in 1987 to 2.1 percent in 2014."

Consolidation of wealth at the very top, Ingraham observes, "is eroding security from families in the lower and middle classes, who rely on their small stores of wealth to finance their retirement and to smooth over economic shocks like the loss of a job. And it's consolidating power in the hands of the nation’s billionaires, who are increasingly using their riches to purchase political influence."

Zucman's research comes as members of Congress and 2020 presidential candidates are pushing a variety of plans to begin reducing America's staggering wealth and income inequality by raising taxes on those at the very top.

Sen. Elizabeth Warren (D-Mass.), who officially launched her 2020 presidential campaign on Saturday, has proposed an annual tax of two percent on assets over $50 million.

Last month, Sen. Bernie Sanders (I-Vt.)—who is reportedly close to announcing his 2020 candidacy—introduced the the For the 99.8% Act, which would establish a 77 percent tax on all estates over $1 billion.

And Rep. Alexandria Ocasio-Cortez (D-N.Y.) has suggested imposing a top marginal tax rate of 70 percent on those who make over $10 million.

Pointing to polling data showing that 76 percent of Americans believe the rich should pay more in taxes, Indivisible's Chad Bolt concluded: "Raising taxes on the wealthy isn't just good policy. It's also good politics."