I've certainly criticized President Obama enough since he's taken office and even more when he was a presidential candidate. But I don't hesitate to applaud him when he does something right. One of his advisers told a Sunday television talk show that the president is on the precipice of overturning yet another Bush administration policy that pushed us back. George W. Bush's stem cell policy pushed us so far back, in fact, that when the Clinton administration ended in 2000, we felt like a country moving forward. When Mr. Bush left office last month, he'd pushed the country back to...