Wal-Mart endorsed ObamaCare in 2009 and helped drag the bill through U.S. Congress, and so far it hasn't recanted. By holding back economic growth and incomes, perhaps the law is expanding the retailer's customer base. Another plus-at least for management-is that Wal-Mart can jettison its employees into the ObamaCare insurance exchanges. The Associated Press reported Tuesday that the largest U.S. private employer is dropping health benefits for some 30,000 workers, or about 5% of its part-time workforce. Earlier health-plan eligibility triage in 2011 had removed tens of thousands of Wal-Mart workers from the balance sheet, so this latest purge was probably inevitable. Wal-Mart cites its inability to manage higher-than-anticipated health expenses. Perhaps- wasn't ObamaCare supposed to bring those costs down? Obviously the company is also responding rationally to ObamaCare's incentives. With a subsidized government alternative now open for business, and since corporations aren't liable for a penalty for not covering people who work fewer than 30 hours a week on average, cost-control logic says to send such coverage ballast over the side. Other retail and grocery chains including Target, Home Depot and Trader Joe's have already done the same. ObamaCare's critics predicted that such insurance dumping was inevitable, and the only question now is how many and how fast other companies partake of the new all-you-caneat entitlement buffet. Get whatever you like, the bill's on taxpayers. The disruptions will be concentrated in industries with large numbers of low-skilled and low-income workers, like restaurants, hospitality and, yes, retail. The irony is that even as Wal-Mart drops insurance because it is too costly, President Barack Obama is claiming credit for lowering health costs. He boasted the other day that the law gave every U.S. family "a $1,800 tax cut" by supposedly reducing the rate of employer-premium growth. Obama