I think it’s sarcasm
Remember when Trump got elected and all the leftist moms were worrying about how they would explain Trump to their children? Some even came out and said their young child had asked them if the world was going to end because - Trump. Some questions were obviously not something their young children would even think of, unless brainwashed.
Legal immigrants children asking; “Are we going to be deported?”
etc
Ah, I see now. In that case, the tweet is pretty funny.