I am going to shock some people here on the left and the right...
I do not have a problem with offing some American who goes to another country and who actively participates in any action that can be defined as an attack on this country.
I am not talking about making a speech or even saying Allah is great and death to America.
You join Al Qaeda you are actively engaged in hostile actions against this country.
Now we are supposed to honor their rights as American citizens while they are plotting to attack this country.
I don't have any problem taking these people out in any way possible.

This may come as a shock to you. Nazi Germany and the Japanese created some pretty proficient "terrorists". The prison camp Nazi's were particularly bad terrorists.
And even they had the rule of law applied to them.
Now we want to eliminate the rule of law as applied to Americans who MIGHT commit a terrorist act.
It only took one Presidency to go from killing terroists in Afghanistan and Pakistan to killing Americans terrorists to being willing to kill Americans who might be terroists.
Wonder where the convenience killings might end. Aren't you not a little curious what the President three elections from now might decide who else would be ok to kill?
Take this issue to Congress. Make it possible for the SCOTUS to rule on it. Why do you want a President to have this much power?