Yep, saw that.
But the purpose of the family details is not to protect them per se, but to keep them from being kidnapped and compromising the president.
Barron has no government role and only had one as a security risk to the president while Tang was in office.
Sorry, they should pay his security if they feel it is needed.
@Cosmichomicide It appears his coverage was removed and then reinstated after the assassination attempt. It's discretionary.