Kentucky GOP Sen. Rand Paul — the libertarian who blocked a Senate vote for nearly 14 hours over drone strikes — says the NSA spying has “gone too far” and is speculating about whether the agency has tapped into President Obama’s cellphone.

Paul’s comments follow the most-recent revelations about the NSA’s post 9-11 data collecting — that German Chancellor Angela Merkel was a victim and the agency purportedly had access to the servers of Internet giants Yahoo! and Google.

The senator made the comments during an interview this weekend with Bloomberg’s “Political Capital with Al Hunt” and acknowledged being “a bit” fastidious about the president’s cellphone because it is almost certainly encrypted. But he was using that extreme hypothetical situation to point out the NSA gets its authorization from the secretive Foreign Intelligence Surveillance Act court so most anything is possible.

“Are they tapping the president’s phone, also?” asked Paul on the show. “He’s got a cellphone. … And I say that a bit facetiously, but at the same time, the warrants that are coming out of the FISA court are so expansive and without limit and non-specific that they apply to all cellphones. So conceivably the NSA could be spying on the president’s phone.”