After rejection by USA Today, Washington Post, New York TimesThe New York Post has accepted a full-page ad declaring Barack Obama’s real biological father is the late Communist Party activist Frank Marshall Davis, not the Kenyan Barack Hussein Obama. Filmmaker Joel Gilbert makes the case in his full-length documentary “Dreams from My Real Father: A Story of Reds and Deception.” The ad will run in the Post’s New York City, national and international editions Tuesday and Sunday. Convincing the newspaper to accept the full-page ad required Gilbert to go personally to the Post’s main editorial office in Manhattan. “It took...