One key rule in politics is: If you're explaining, you're losing. If you're denying, you're really losing. And if NBC News questions you about your ties to an international terror network on national television, the denial doesn't actually help – even if it's sincere. And in the case of Abdul El-Sayed, this denial is utter nonsense. Kristen Welker posed the question on yesterday's Meet the Press, highlighting just how much of an issue El-Sayed's ties to the Muslim Brotherhood have become in Michigan's Senate race. El-Sayed's terse denial to Welker's repeated and direct queries doesn't exactly settle the matter, either:...