Donald Trump “privately” supports a national abortion ban that would prohibit the procedure after 16 weeks of pregnancy, RadarOnline.com has learned. In a surprising development to come after the GOP primary frontrunner has largely remained quiet about the controversial issue, sources close to Trump revealed this week that he “privately” supports a national abortion ban. According to New York Times reporter and Trump biographer Maggie Haberman, the former president is waiting until he secures the GOP presidential nomination before publicly discussing his stance on the national abortion ban iss…