Michael G. Flynn, the son of President Donald Trump's former national security adviser, is a subject of the federal investigation into Russian meddling in the presidential election and possible collusion between Moscow and the Trump campaign, according to four current and former government officials. Michael G. Flynn accompanied his father, for instance, on a trip to Moscow in December 2015 for the elder Flynn to deliver a paid speech at a gala for the state-sponsored Russian television network RT. He can be seen in video from an associated event.
Experts speaking to NBC News believe that Mr. Mueller is looking to compel cooperation from former NSA Director Mike Flynn by targeting his son, who had a substantial hand in his father's affairs.
Several legal experts with knowledge of the investigation have told NBC News they believe Mueller, following a classic prosecutorial playbook, is seeking to compel key players, including Flynn and Manafort, to tell what they know about any possible Trump campaign collusion with Russia. "Any time a family member is identified as a subject that does increase pressure," said Peter Smith, a former federal prosecutor. "In the typical parent-child relationship the last thing any parent would want is for their child to get in trouble for something they initiated."