Most members of Congress engage in Insider Trading, all the time.
It is one of the primary vehicles by which many members enter office with little net worth, and on a salary of $174,000, leave office a few years later worth tens of millions of dollars.
Was this case just too blatant for the Dept of Injustice to ingore? Was this a message being sent to members of Congress that the noose is tightening via President Trump?
The former Speaker of the House, John "Wiskey" Bohner told the press that Insider Trading laws "didn't apply" to members of Congress.
https://theintercept.com/2015/05/07/congress-argues-cant-investigated-insider-trading/
But do they sit next to DJT in TV news video’s and have been ardent supporters the moment he announced his run? Have you not noticed M.O. of Mueller? Since he can’t find anything to charge DJT with, he is placing anyone associated with Trump under microscope. It is the older than hills method prosecutors have used for a century or more.
Good thing there are no pictures of me with DJT, because I may have rounded off savings account interest incorrectly. And I did get 3 traffic violation tickets in Chicago 54 years ago.