One punch on a Shanghai–LA flight. Entire family loses their U.S. visas.
August 28. A kid keeps bothering the passenger next to him.
A stranger steps in.
The father doesn’t discipline the child — he starts throwing punches.
Crew radioed ahead. Plane lands at LAX. Customs and FBI board immediately.
Father is treated as an aviation-security threat, arrested on the spot, and deported by dawn.
Wife and child sent back with him. All three visas canceled.
That’s the whole trip.