I think Trump's twat today about Omar, finishing off with an AOC +3, designation of the squad, means that Omar is going because of well documented immigration fraud. Signed, sealed and delivered, just waiting for the best timing for the announcement.
Next we'll get a countdown, AOC +2, AOC +1, until just AOC is left. The will highlight just what kind of people she backed.
Meanwhile, what dem presidential candidates? The squad is wiping them off the news cycle. All they can do is join in the Squad food fight to get any press. They'll go down in the backwash.