Former Speaker of the House Newt Gingrich said Wednesday that House Republicans should stop negotiating with President Barack Obama and congressional Democrats on the fiscal cliff, saying that by doing so, they give Obama all of the leverage in the talks. “One of the things I would say to House Republicans is to get a grip,” Gingrich said in a speech at the Ronald Reagan Presidential Library in Simi Valley, Calif. “They are the majority. They’re not the minority,” he said, enunciating the words as if explaining the concept to someone who did not understand it. “They don’t need to...