A Quinnipiac poll in April showed Chris Christie as the most popular potential Republican vice-presidential candidate, thanks to his budget cuts and standing up to government employees' unions. But the governor of New Jersey has a problem, specifically an Islam problem, that can and should get in the way of his possible ascent to higher office. Time and again he has sided with Islamist forces against those who worry about safeguarding American security and civilization. Some examples: 2008: When serving as U.S. attorney for New Jersey, Christie embraced and kissed Mohammed Qatanani, imam of the Islamic Center of Passaic County,...