>FBI tapes are indeed submissable in court if they are obtained legally.
>It was an investigation into the Governor of Illinois, not a Senator or Obama. It just happened that he was caught trying to 'sell' Obama's senate seat which will be vacant when Obama assumes office of the President.
>Don't know what you mean by 'domestic research.' Research on what or whom?

Well it was figurative speach {s}, translating to subject of wiretaping in this case (Governor of Illinois, although I have hard time understanding titles/hierarchy). Wiretaping of foreign embassies, politicians, offices etc would be 'foreign research'. But of course there is no such thing right? {g}

Back to domestic 'thingy'
So FBI wiretapes drug dealer, and they hear he orders someone to get killed and that someone actually gets killed,
can they put him behind bars ? Or they needed some kind of warrant to start wiretaping (like for entering premises)
to make it legal ? If so, who grants such warrant ? Especially when high politics subjects are concearned.