Senator Saxby Chambliss says NSA leaker Edward Snowden has severely compromised American intelligence operations — more than all the other acts of espionage in the nation’s history.

“This guy has done more damage to the intelligence community of the United States than all other spy cases combined, in my opinion,” the Georgia Republican said on MSNBC this morning. “It has been extremely detrimental.”

Chambliss also suggested Snowden has provided significant momentum for opponents of certain intelligence-gathering programs. He seemed to take issue with House Republicans’ bringing Justin Amash’s amendment to the defense-appropriations bill, which would have limited the NSA’s domestic spying powers, to the floor for a vote last week. The amendment garnered broad bipartisan support, but failed 205 to 217.

“The vote in the House is kind of hard to predict in a way just because, right now, the House operates in ways that sometimes we’re not sure exactly why they’re doing what they’re doing,” he said. Chambliss again blamed Snowden for giving “folks who are just deadset against programs like this more ammunition to come against the intelligence world.”