DES MOINES — Make recreational marijuana legal and end subsidies for the renewable energy industries. Those were among the policies proposed Friday by Mark David Strauss, the Libertarian candidate in Iowa’s 2nd Congressional District, during his remarks on the Des Moines Register Political Soapbox at the Iowa State Fair.Strauss, a Bettendorf businessman, also called for term limits, a free-market-driven health care system, and immigration reform that strengthens border policy and provides a pathway to citizenship for immigrants brought here illegally as children.Strauss is running against Democratic incumbent U.S.