Richard Burr of North Carolina would step down [from being the head f the Senate Intelligence Committee] on 15 May.

..It has emerged on Thursday that Mr Burr’s phone has been seized by the FBI as part of the probe.

The senator is alleged to have used inside information to avoid market losses from coronavirus.

…It is illegal for members of Congress to trade based on non-public information gathered during their official duties.

Richard Burr: US Senate intelligence chief quits amid virus trading scandal – BBC News

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