"Yet for Christians who feel they are engaged in a great struggle for the identity of America - and fear that their side has been losing ground - the most important question is not whether Trump believes in their cause, but whether he can win their wars. 'Jimmy Carter sat in the pew with us. But he never fought for us,' Ralph Reed, chairman of the Faith and Freedom Coalition, told me after the president's speech. 'Donald Trump fights. And he fights for us.'"