abused considering they would lie to a pfizer court and there's no accountability. >> i agree with you completely. your constitutional analysis gets you an a+. >> sean: from a harvard professor, i'm way out of my league. okay. >> the constitution requires a search warrant for any american citizen or american person that includes permanent residence. the cia has authority only to investigate foreign threats to the united states. sometimes when you overhear a foreigner playing against the united states, he or she is talking to an american. and out of the plea they may listen to what the american saye full context. but if you are going to be spying on americans specifically, both the law and the fourth amendment of the constitution require that you get a warrant.