Last November, the U.S. Department of Justice quietly closed a three-year antitrust investigation into Monsanto, the biotech giant whose genetic traits are embedded in over 90 percent of America’s soybean crop and more than 80 percent of corn. Despite a splash of press coverage when the investigation was initially announced, its termination went mostly unreported. The DOJ released no written public statement. Only a brief press release from Monsanto conveyed the news.

In 1996, the world learned a Japanese firm had cornered the copper market. The company, Sumitomo, was fined $125 million for squeezing copper supplies and artificially inflating prices--at that point the largest penalty ever levied by a U.S. government agency. The Commodities Futures Trading Commission called the scheme “one of the most serious worldwide manipulations” of a commodity in decades. Last Monday, the Securities and Exchange Commission posted a decision that could effectively lead to a repeat of the Sumitomo corner, with one key difference: hoarding copper will now be legal.

Economic interdependence among nations, Americans have long believed, is the surest and safest path both to a wide prosperity and a perpetual peace. If all nations jointly depend together on one vast "global" factory for many basic goods, so our thinking holds, no one state will ever dare disrupt the functioning of this "communalized" system.

This week, the Obama administration’s Justice Department struck a great legal blow against our open market for books, and indeed against open markets in America. Even though online retailer Amazon has captured more than 50 percent of many key book markets—like the one for e-books—antitrust enforcers brought suit not against this vast and swelling monopolist but against the publishers who are the victims of Amazon’s power.

Their supposed crime? To do what is most normal in any real market: insist on the right to price your own product.