Former House Speaker Newt Gingrich (R-Ga.) on Monday sought to walk back his controversial remarks on healthcare after coming under friendly fire from the right. Gingrich, who's acknowledged that his discipline and judgment would be a key metric of success in his bid for the Republican presidential nomination, had come under intense criticism from conservatives stunned by his comments on NBC's “Meet the Press." “I am completely opposed to the ObamaCare mandate on individuals," Gingrich said in a video posted to his website on Monday. “I am for the repeal of ObamaCare and I am against any effort to impose...