I understand McCain's conflicted views. Hillary's liberalism versus Rand Paul's irresponsible national security views. As a Republican myself, national security and defense of the free world would have to trump the domestic stuff. Paul cannot tell the difference between peacetime criminal justice and the fact that the USA is at WAR. Rand Paul's views of amnesty and appeasement are not acceptable even with the veneer of a Republican label.
Also, I do not understand how those in the Tea Party cant support Paul. Paul is for the Shamnesty of some kind and I have never heard tea partiers support amnesty. Libertarianism is for open borders.