I think if someone is being truthful they would not have a problem with the immigration officers vetting or even handing over their phone for them to peruse. She had to give out the phone because by refusing to hand it over it would have meant immediate deportation. Handing it over shows that at least she was cooperating and that will sometimes help your cause if the case is 50/50.

According to (former) NSA analyst and counterintelligence officer John R. Schindler's piece in the Observer, the U.S.'s intelligence community is so convinced that Donald Trump and his administration have been compromised by Russia that (they) it are no longer briefing the White House on all of its most sensitive information, lest the information end up in Putin's cold, tiger-blood-soaked hands.

In light of this, and out of worries about the White House’s ability to keep secrets, some of our spy agencies have begun withholding intelligence from the Oval Office.

Why risk your most sensitive information if the president may ignore it anyway?

A senior National Security Agency official explained that NSA was systematically holding back some of the “good stuff” from the White House, in an unprecedented move.

For decades, NSA has prepared special reports for the president’s eyes only, containing enormously sensitive intelligence. In the last three weeks, however, NSA has ceased doing this, fearing Trump and his staff cannot keep their best SIGINT [Signals Intercept] secrets.

Worse, our nation's intelligence experts aren't solely worried that Team Trump might accidentally reveal secrets to the enemy.

There's concern that even the Situation Room has been compromised by Russia.

What’s going on was explained lucidly by a senior Pentagon intelligence official, who stated that “since January 20, we’ve assumed that the Kremlin has ears inside the SITROOM,” meaning the White House Situation Room, the 5,500 square-foot conference room in the West Wing where the president and his top staffers get intelligence briefings.

“There’s not much the Russians don’t know at this point,” the official added in wry frustration.

Credit to the Observer for publishing this piece, since Jared Kushner, Trump's senior aide/son-in-law/lead puppeteer, is the paper's owner and publisher.