The president’s tweet — posted on his personal account and then re-sent from his White House account — is an act of intimidation. Nordstrom interacts with many executive branch agencies: the Department of Labor, the Federal Trade Commission, the Securities and Exchange Commission, the Internal Revenue Service and others. Each one of these agencies will be headed by Trump appointees. Most will be staffed with other political appointees as well. The president is telling all of these people that he is very angry with Nordstrom. The message is clear, and it won’t take much for a political appointee in some agency to conceive of an ingenious way of ingratiating himself with the White House by making life difficult for the store chain.

Most important, regardless of whether such retaliation actually happens, Nordstrom and the handful of other companies that announced they, too, would drop the line have to live in fear of it for the rest of the Trump administration. And now every other department store knows that it had better not make a similar “business decision” that displeases the president. In other words, do business with the Trump family and help the Trump family promote its products, or else.

This is not the way free markets work, particularly in the United States. We fought a revolution in part against the mercantilism that prevailed in Britain, where the king and members of Parliament played favorites and people who wanted to ingratiate themselves with the government did business with companies in which powerful politicians had an interest (the South Sea Company and the East India Company were the two most notorious examples). Edmund Burke and Adam Smith railed against this type of corrupt relationship between business and government in Britain; similarly, the founders of our country did not want that type of abuse of power going on here.

The modern-day Tea Party movement arose in the aftermath of the Great Recession, a reaction to the perception that politicians were playing favorites in bailing out Wall Street banks and auto companies. The Republican Party for years has made a very strong case for an economy in which market actors make their own decisions free of government interference.

And now all of that — and indeed the bedrock principles of limited government power that go back to Thomas Jefferson — lies in shambles as a president seeks not only to use his official position to promote the business of the Trump family but also to retaliate against other businesses for the decisions they make in the marketplace.