I’m a Depression historian. The GOP tax bill is straight out of 1929.

“There are two ideas of government,” William Jennings Bryan declared in his 1896 “Cross of Gold” speech. “There are those who believe that if you will only legislate to make the well-to-do prosperous their prosperity will leak through on those below. The Democratic idea, however, has been that if you legislate to make the masses prosperous their prosperity will find its way up through every class which rests upon them.”

That was more than three decades before the collapse of the economy in 1929. The crash followed a decade of Republican control of the federal government during which trickle-down policies, including massive tax cuts for the rich, produced the greatest concentration of income in the accounts of the richest 0.01 percent at any time between World War I and 2007 (when trickle-down economics, tax cuts for the hyper-rich, and deregulation again resulted in another economic collapse).

Yet the plain fact that the trickle-down approach has never worked leaves Republicans unfazed. The GOP has been singing from the Market-is-God hymnal for well over a century, telling us that deregulation, tax cuts for the rich, and the concentration of ever more wealth in the bloated accounts of the richest people will result in prosperity for the rest of us. The party is now trying to pass a scam that throws a few crumbs to the middle class (temporarily — millions of middle-class Americans will soon see a tax hike if the bill is enacted) while heaping benefits on the super-rich, multiplying the national debt and endangering the American economy.

In 1926, Calvin Coolidge’s treasury secretary, Andrew Mellon, one of the world’s richest men, pushed through a massive tax cut that would substantially contribute to the causes of the Great Depression. Republican Sen. George Norris of Nebraska said that Mellon himself would reap from the tax bill “a larger personal reduction [in taxes] than the aggregate of practically all the taxpayers in the state of Nebraska.” The same is true now of Donald Trump, the Koch Brothers, Sheldon Adelson and other fabulously rich people.

During the 1920s, Republicans almost literally worshiped business. “The business of America,” Coolidge proclaimed, “is business.” Coolidge also remarked that, “The man who builds a factory builds a temple,” and “the man who works there worships there.” That faith in the Market as God has been the Republican religion ever since. A few months after he became president in 1981, Ronald Reagan praised Coolidge for cutting “taxes four times” and said “we had probably the greatest growth in prosperity that we’ve ever known.” Reagan said nothing about what happened to “Coolidge Prosperity” a few months after he left office. ...