That does not make any difference. A US citizen could be affiliated with Al Qaeda, for example.
Also, you keep adding 'US citizens who do not pose an immediate threat' even though that was not part of Rand Paul's question in the letters to John Brennan, and it is nothing more than a straw man. If the person does not present an imminent threat the the use of military force would not be necessary, by definition.
For persons who do present a colorable threat to the US in concert with Al Qaeda or its affiliates, regardless of their citizenship or situation within or without the boundaries of the US, the President's determination is the due process. If you don't like this (which I quite understand) then what you want is to amend the AUMF. Because it very clearly grants such broad authority to the President.
Also, you keep adding 'US citizens who do not pose an immediate threat' even though that was not part of Rand Paul's question in the letters to John Brennan, and it is nothing more than a straw man. If the person does not present an imminent threat the the use of military force would not be necessary, by definition.
For persons who do present a colorable threat to the US in concert with Al Qaeda or its affiliates, regardless of their citizenship or situation within or without the boundaries of the US, the President's determination is the due process. If you don't like this (which I quite understand) then what you want is to amend the AUMF. Because it very clearly grants such broad authority to the President.