I have a problem with the status quo, but it is not the problem Rand Paul has today.
My problem is that we haven't found a way to rescind the 2001 AUMF against "any organization" involved in the 9/11 attacks, because the amorphous term "organization" has allowed us to declare war against a label.
Rand Paul's problem --- charitably (I think this has much more to do with partisan politics) --- is that he believes US citizenship should be a talisman exempting people from the war.
It is not a good idea, I think, to make long-term wars against labels more sustainable and less threatening to US citizens. So, we make it infinitesimally harder for a citizen terrorist to be stopped. Woopity-doo! That's cold comfort for the wedding party guests in Waziristan who are being incinerated by airstrikes against actual guns-and-explosives- carrying al Qaeda militants that happen to be attending.
I also think Paul's original stance defies common sense. But that's O.K., because I think he knows that too; he was just setting a trap.