Rich Lowry: The battle over socialism is joined

It's begun. We are having a debate over socialism.Not over whether it's fair to call Democrats socialists. Not over whether socialism has been good for Venezuela or some other faraway, unfortunate country. But no-kidding socialist policies right here in the United States.The press attention to a new study of the costs of "Medicare-for-all," or universal health coverage paid for by the government that goes much further than Obamacare, is a sign that it is a live issue.Popularized by the socialist