Have you ever wondered why ObamaCare is burdened with so much complexity? Here's the answer: Barack Obama. Obama? Yes, the president himself. He campaigned on the promise that he would put partisanship aside and unite the country behind sensible answers to pressing problems. Then he didn't. How could that possibly have worked in health care? Easy. Obama could have adopted the approach taken by his 2008 opponent, John McCain. In fact we now know that Zeke Emanuel and others on the White House staff were urging him to do just that. Also, before he became the president's chief economic adviser,...