They voted down every single privacy amendment to FISA, the act that lets the NSA spy on you without a warrant. They voted down the amendment that would let you hear rough estimates of how much the NSA was spying on you. Obama spoke out against amendments that offered less privacy protection than the ones that he voted for in 2008.
The common-sense amendments the Senate hastily rejected were modest in scope and written with the utmost deference to national security concerns. The Senate had months to consider them, but waited until four days before the law was to expire to bring them to the floor, and then used the contrived time crunch to stifle any chances of them passing.
Sen. Ron Wyden's amendment would not have taken away any of the NSA's powers, it just would have forced intelligence agencies to send Congress a report every year detailing how their surveillance was affecting ordinary Americans. Yet Congress voted to be purposely kept in the dark about a general estimate of how many Americans have been spied on.
You can watch Sen. Ron Wyden's entire, riveting floor speech on the privacy dangers and lack of oversight in the FISA Amendments Act here.
Sen. Jeff Merkley's amendment would have encouraged (not even forced!) the Attorney General to declassify portions of secret FISA court opinions—or just release summaries of them if they were too sensitive. This is something the administration itself promised to do three years ago. We know—because the government has admitted—that at least one of those opinions concluded the government had violated the Constitution. Yet Congress also voted to keep this potentially critical interpretation of a public law a secret.
Tellingly, Sen. Rand Paul's "Fourth Amendment Protection Act," which would have affirmed Americans' emails are protected from unwarranted search and seizures (just like physical letters and phone calls), was voted down by the Senate in a landslide.