Consumers in neighbouring Slovakia, for instance, are five times less likely to buy a package holiday than are Czechs, a difference not entirely explained away by Slovakia's poorer economy.

ECONOMIST: Face value

The reason is that under the ACA, insurers may not charge the oldest enrollees more than three times as much as the youngest, but the average cost of covering the oldest enrollees is over five times that of the youngest, so insurers would raise premiums for enrollees under age 65 to cover the difference.

FORBES: More on Raising the Medicare Retirement Age (from Paul Van de Water)