Former Arkansas Gov. Mike Huckabee (R) said this morning an independent investigation is needed to look into surveillance of members of President Donald Trump's campaign team.

In remarks yesterday, House Intelligence Committee Chairman Devin Nunes (R-CA) said that some of the communications of the Trump transition team were "monitored" after the election as part of "incidental collection."

Huckabee said the surveillance may have violated the Fourth Amendment.

"These are private citizens of America," he said, adding that someone in the government "illegally and unethically" leaked information about members of Trump's team swept up in the surveillance of people overseas.

Ed Henry noted that, according to Nunes, Obama administration officials had a list of unmasked names of Trump associates swept up in the surveillance.

Huckabee emphasized that, according to Nunes, even names that were masked were easily identifiable.

He said there must be an "independent type of investigation" because Congress cannot leave politics out of it.

"You're gonna have to find people who are above reproach [to conduct the investigation] and it may be the longest search in American history," said Huckabee.

Watch the full interview above.

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