'The kids have gone underground': Jared Kushner and Ivanka Trump are in hiding as Mueller nears the Oval Office

White House senior advisors Ivanka Trump and Jared Kushner have gone "underground" amidst special counsel Robert Mueller's investigations, MSNBC anchor Nicolle Wallace reported on Tuesday.

"New court filings from Mueller's office confirmed investigators were in fact searching for documents related to the now-infamous Trump Tower meeting, among other things," Wallace noted. "The filings also reveal that [Paul] Manafort was interviewed twice by the FBI while he was working as a political consultant in Ukraine years before he joined Trump's campaign."

"Let me put up for the viewers some of the people that were involved are Donald Trump, Jr., the president's son; Jared Kushner; Paul Manafort, who has been charged with -- is facing dozens of charges at this point, and five other people connected to Russian lobbyists, many with ties to the Kremlin," she noted. "Bob Mueller has shown no reluctance to charge people close to the president, nor has he shown any reluctance to charge people close to the Kremlin."

"Obviously, Jared Kushner's interactions with foreign leaders under heavy scrutiny by the Mueller probe," Wallace noted. "We don't know if it is by other jurisdictions as well."

"The word I hear is that the kids have gone underground," she reported. "What do you hear about what Jared and Ivanka are up to? "

"Jared and Ivanka have definitely, Jared in particular, kept a lower profile in recent months, particularly since Kushner had his security clearance was downgraded," Associated Press White House reporter Jonathan Lemire agreed.

"Look, there remains concern in the White House and outside among Trump allies -- from all our reporting -- about what Kushner's exposure could be here," he explained.

Specifically, Lemire cited meetings Kushner held earlier in the administration, which White House sources fear could have mixed business and policy.