Fox News reported Tuesday night that members of the House Intelligence Committee have expanded their investigation into the Susan Rice surveillance controversy.

Appearing on The O’Reilly Factor, investigative reporter Adam Housley said the following:

They’re looking into allegations where Americans including politicians have possibly been unmasked and had their information collected into the files, similar to what they did to the Trump team.

Housley also said that both the House and Senate investigations are being stonewalled:

They say the FBI is being very difficult. We’re told [investigators] just want to know about the unmasking. How frequent was this? Who was doing it? Why were they being unmasked?

Housley added:

[A Committee member says the FBI is] going to have to turn everything over or we’re not going to authorize the congressionally approved 702 program which allows them to do this in the first place. This investigation is full-blown.

Section 702 of the Foreign Intelligence Surveillance Act, or FISA, is up for reauthorization in 2017. The program surveils non-U.S. persons believed to be located outside the United States, incidentally sweeping up the communications of Americans as well, in order to acquire foreign intelligence.

O’Reilly asked Malia Zimmerman, an investigative reporter working with Housley, if the FBI was investigating the case. Zimmerman answered:

There’s a big question about the FBI’s role in this and there’s concern in the House about generally how the FBI is handling this case.

She added that FBI Director James Comey has yet to come back to the Hill to answer the 100 questions the House Intelligence Committee wants answered:

The FBI claims to be “preparing the information,” but it’s been four weeks, Bill.

O’Reilly suggested getting Attorney General Jeff Sessions involved, “because he’s Comey’s boss.”

Housley said they were making progress on the story, but because of the sensitive and classified nature of the information, it’s been difficult work.

Zimmerman added that some of the whistleblowers who have been talking to them may come forward and provide testimony to the House Intelligence Committee: