Trump's administration looks a great deal like those of the 1850s and the 1890s, with business and government so intertwined that they cannot be disentangled.

The Declaration of Independence promised citizens equal access to economic opportunity. This was the powerful principle for which men were willing to fight the American Revolution, but it was never codified in law. When the Founding Fathers wrote the Constitution, they assumed that the country's vast resources would ensure equality of opportunity.

Special counsel Robert Mueller, investigating Russian interference in the 2016 election, provided ample evidence that the president should be investigated for obstruction of justice in his attempt to quell the Russia investigation by firing Comey and urging aides to lie.

The Treaty of Fort Laramie established most of what would later become South Dakota as a reservation, along with the Black Hills. But the treaty did not stop miners, buffalo hunters, railroad men, or settlers from intruding on Lakota lands.

Movement Conservatism was a fringe force from the 1950s until the 1980s, when voters elected Movement Conservative Ronald Reagan to the White House. But even then, their control of the Republican Party was not a given.

If Republican leaders are willing to enable Trump's autocratic enthusiasms in return for oligarchy, American democracy will die.

Republicans controlled the federal government for decades after the Civil War, and their policies funneled wealth upward -- with dire consequences. In 1893, the economy crashed, and too few Americans had enough purchasing power to revive it. Lincoln had been right: Government that served the wealthy would ruin the country.

If Congress allows the USPS to collapse and private companies take over the mail business, we can expect what we have seen with private internet providers: thorough service in urban areas that will turn a healthy profit, either none or very expensive service in rural areas.

Republicans turned against organized workers and abandoned the idea of promoting equality at the bottom of the economic scale. They turned their idea of economic harmony into a justification for supporting industrialists, who were the nation's job creators.