In 2014 big business opposed several of the most free-market members of Congress, and even a Ron Paul-aligned Georgia legislator who opposed taxpayer funding for the Atlanta Braves.

The U.S. chamber jumped into a Republican primary in Grand Rapids, Mich., to try to take down Rep. Justin Amash, probably the most pro-free-enterprise and most libertarian member of Congress. Free-market groups, including the Club for Growth, Freedomworks and Americans for Prosperity, strongly backed Mr. Amash.

And now the chamber plans to spend up to $100 million on the 2016 campaign. Roll Call, a Capitol Hill newspaper, reports, “Some of business’ top targets in 2016 will be right-wing, tea party candidates, the types that have bucked the corporate agenda in Congress by supporting government shutdowns, opposing an immigration overhaul and attempting to close the Export-Import Bank.” Politico adds a highway bill to big business’ list of grievances against fiscal conservatives.

This clash between pro-market and pro-business is an old one. Adam Smith wrote “The Wealth of Nations” to denounce mercantilism, the crony capitalism of his day. Milton Friedman said at a 1998 conference: “There’s a common misconception that people who are in favor of a free market are also in favor of everything that big business does. Nothing could be further from the truth.”

Via David Boaz: The Divide between Pro-Market and Pro-Business @ Cato.org.