White House officials have been holding private meetings this week aimed at soothing lawmakers’ concerns over the U.S. posture in Syria, the future of the American military presence in Afghanistan and defense spending. The meetings come as a frustrated White House seeks to push back at criticism of President Barack Obama’s foreign policy. But the White House outreach appeared to be having little effect on some lawmakers’ concerns. Tennessee Sen. Bob Corker, the top Republican on the Senate Foreign Relations Committee, described Tuesday night’s White House meeting with chief of staff Denis McDonough and national security adviser Susan Rice as...