Her statement follows reports based on new leaks from former NSA systems analyst Edward Snowden indicating that the NSA listened to Merkel and 34 other foreign leaders.
“With respect to NSA collection of intelligence on leaders of U.S. allies—including France, Spain, Mexico and Germany—let me state unequivocally: I am totally opposed,” Feinstein said. She added that the U.S. should not be “collecting phone calls or emails of friendly presidents and prime ministers” unless in an emergency with approval of the president.
European Union officials who are in Washington to meet with lawmakers ahead of White House talks said U.S. surveillance of their people could affect negotiations over a U.S.-Europe trade agreement. They said European privacy must be better protected.
Many officials in Germany and other European governments have made clear, however, that they don't favor suspending the U.S.-EU trade talks which began last summer because both sides stand to gain so much through the proposed deal, especially against competition from China and other emerging markets.
As tensions with European allies escalate, the top U.S. intelligence official declassified dozens of pages of top secret documents in an apparent bid to show the NSA was acting legally when it gathered millions of Americans' phone records.
Director of National Intelligence James R. Clapper said he was following the president's direction to make public as much information as possible about how U.S. intelligence agencies spy under the Foreign Intelligence Surveillance Act. Monday's release of documents focused on Section 215 of the Patriot Act, which allows the bulk collection of U.S. phone records.
The document release is part of an administration-wide effort to preserve the NSA's ability to collect bulk data, which it says is key to tracking key terror suspects, but which privacy activists say is a breach of the Constitution's ban on unreasonable search and seizure of evidence from innocent Americans.
The release of the documents comes ahead of a House Intelligence Committee hearing Tuesday on FISA reform.
The documents support administration testimony that the NSA worked to operate within the law and fix errors when they or their systems overreached. One of the documents shows the NSA admitting to the House Intelligence Committee that one of its automated systems picked up too much telephone metadata. The February 2009 document indicates the problem was fixed.
Another set of documents shows the judges of the FISA court seemed satisfied with the NSA's cooperation. It says that in September 2009, the NSA advised the Senate Intelligence Committee about its continuing collection of Americans' phone records and described a series of demonstrations and briefings it conducted for three judges on the secretive U.S. spy court.
Updated on: October 29, 2013 10:20 IST
