I never bought into Obama’s hype machine, but the drone strike was carried out by the United States armed forces, who are required to not follow illegal orders; via a chain of command. There is a different party in power now: have there been any prosecutions?Presumably there was a lot of legal advice that sanctioned the hit on a US citizen exercising his ostensible free speech rights,[1] otherwise it would not have happened.

[1] My personal opinion is that praising terror and “inspiring” others is not free speech, but I don’t pretend otherwise