Ambassador John Bolton, who famously represented the United States at the UN during the Bush administration, said Congress should be extending the NSA's surveillance program. Appearing on Fox News Sunday with Chris Wallace, Bolton says that without the NSA snooping, the US is "vulnerable and blind."

Bolton told Wallace he thinks some part of the program, if not all, will be extended.

"I think ultimately, some aspect of it will be extended, I think there's no question about that. The number of people that actually want to shut the program down entirely is really very small," Bolton said.

Bolton said there may be more faith in the NSA surveillance program if there were another president in the Oval Office. As for the report from the DOJ's inspector general that said no FBI agents could point to a terrorist plot busted as a result of the NSA surveillance, Bolton said that report looked at only one part of the problem.

"Let's be clear how intelligence works, very rare that one piece of intelligence dictates the ultimate conclusion. This NSA program is part of a lot of efforts and it is very important," Bolton said.

Bolton said many of those opposed to the NSA program are essentially engaged in McCarthyism to scare the American people.