There have been queries, using US person identifiers, of communications lawfully acquired to obtain foreign intelligence targeting non-US persons reasonably believed to be located outside the United States. These queries were performed pursuant to minimization procedures approved by the Fisa court and consistent with the statute and the fourth amendment.
Basically, if you communicated with someone that is "reasonably believed" to be a terrorist, you've lost constitutional protection against searches without a warrant according to the NSA. This directly contradicts what President Obama has said about the programs in the past.
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