...and the offending program was found and modified to pass Fourth Amendment scrutiny. To me that sounds like the revised FISA is working.
Distinguishing between communications end points inside and outside the U.S. will never be easy, and will only get harder as technology becomes more advanced and adversaries learn to better exploit it to cover their tracks. You can either give up on (100% Constitutional!) cross-border intercepts, or you can have oversight to minimize "collateral" data collection on citizens.
If you think there's evidence that U.S. citizen-only private communication is being monitored and retained deliberately, spell it out, because that's huge news.
Ex-NSA worker Bill Binney claimed that intercepted domestic communications were privacy controlled and anonymized with encryption to comply with the law until a warrant was issued, but later the anonymization protection was removed.
Distinguishing between communications end points inside and outside the U.S. will never be easy, and will only get harder as technology becomes more advanced and adversaries learn to better exploit it to cover their tracks. You can either give up on (100% Constitutional!) cross-border intercepts, or you can have oversight to minimize "collateral" data collection on citizens.
If you think there's evidence that U.S. citizen-only private communication is being monitored and retained deliberately, spell it out, because that's huge news.