Sources told the outlet that Vindman's ouster would be portrayed as part of a "broader effort to shrink" the Trump administration's foreign-policy bureaucracy.Vindman catapulted into the national spotlight last year when he was one of several witnesses who testified for the House of Representatives' impeachment inquiry into President Donald Trump.Vindman is the top Ukraine expert on the NSC. He works at the Defense Department but has been detailed to the White House since July 2018. Vindman always planned to return to work at the Pentagon, but his departing ahead of schedule would raise questions about whether the move were politically motivated.Some officials may be removed from the NSC because they've been perceived as having been disloyal to Trump, Bloomberg reported, citing three people familiar with the matter. But the White House plans to characterize Vindman's ouster, which could come as soon as Friday, as part of a wider effort to clean house rather than a personal vendetta against the decorated veteran.