The end of Barack Obama’s presidency is near, and his most important domestic policy accomplishment is teetering and threatening to fall and smash to pieces.

Obamacare, or at least the most-touted part of it, is failing, and for not for mere technical reasons.

By expanding Medicaid, it got more people insured. But the president’s experiment manipulating private insurance markets has created no net benefit and is headed for disaster unless enrollment miraculously skyrockets.

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