The rise of socialism in U.S. politics has free market advocates looking for new ways to make the case for preserving public support for capitalism and economic freedom.Sam Gregg, president of the American Institute of Economic Research, spoke with FOX Business and noted that in recent years there has been "a rise on the political left of people who describe themselves as democratic socialists," adding that these "are not people of your old-style Democratic Party, these are not your JFK Democrats.""These are people who fundamentally disagree with the economic settings of the United States, and...