A key appeals court on Tuesday ruled that despite including a tax, Obamacare doesn’t violate the Constitution’s requirement that all tax bills originate in the House of Representatives, giving the Obama administration another health care win. The three-judge panel of the U.S. Circuit Court of Appeals for the District of Columbia said that the Obamacare tax was “incidental” to the primary purpose of the Affordable Care Act, so it isn’t a revenue-raising measure as envisioned by the Constitution. “Some exercises of the taxing power are not subject to the Origination Clause,” the unanimous panel concluded. The issue had been in...