Here is the press conference. Right at 4:45, a reporter asks if he is concerned that the surveillance was conducted illegally and Nunes says that he believes it was all conducted legally. There is no debate here about what he meant. 
Nunes, himself a Trump transition member, said a “source” had shown him evidence that members of the Trump transition team had been unmasked — and that their identities had been revealed in U.S. intelligence reports. Nunes had previously raised questions about the unmasking of former National Security Adviser Michael Flynn, whose communications with Russia’s ambassador were intercepted by the U.S. government and whose identity was leaked to the news media.
Nunes suggested this unmasking might have been done for political reasons, saying the evidence he had seen had been widely disseminated across the intelligence community and had "little or no apparent intelligence value." He added that he was trying to get more information by Friday from the FBI, CIA and NSA.
“I have seen intelligence reports that clearly show that the president-elect and his team were, I guess, at least monitored,” the California Republican told reporters. “It looks to me like it was all legally collected, but it was essentially a lot of information on the president-elect and his transition team and what they were doing.” He said the information he had seen was not related to the FBI’s Russia investigation.
