My Theory:
The GUMBO tweets from Hussein & Booker may be referring to Andrew Weissman.
This title from Washington Examiner on June 5th:
'Siege: Mueller's 'pit bull' drafted obstruction indictment against Trump'
Then Booker tweets about a 'pitbull' named GUMBO who ran away
and Hussein tweets about Lady Chase (chase?) and GUMBO
Weissman the 'pitbull' as he is often referred as (Hannity referenced this several times tonight) Attended school at Geneva University which is a French speaking school so Weissman would be fluent. Gumbo is French (Gombo). Gumbo could be a reference to Weissman Mueller's Pitbull.
Back in May their was a story which I would call a cover story about Weissman attending Jury Duty in DC. I'm thinking he had to show up to court for personal reasons. He may have tried to run and then got caught.
Weird point… There is VERY little info on his background not even known if he is married or not. No personal info.
https://www.washingtonexaminer.com/news/siege-muellers-pitbull-drafted-obstruction-indictment-against-trump
https://www.cbsnews.com/news/andrew-weissmann-one-of-muellers-top-prosecutors-selected-for-jury-duty-in-slip-and-fall-case/