Because the secret service and fbi couldn’t find any suspects for one of the most heavily guarded places in the country, this raises a bunch of red flags, and two situations can happen from it
1. It is a blatant lie, which would seem more likely due to the amount of cams and tests that could be performed, thus making it look like it was either hunter or some government official that is important
2. They actually couldn’t find who it was… and this would kinda give people a sense that the White House doesn’t actually have good security like they imply, thus leading to higher risk of infiltration.
It would also let people like Kim jong un, Xi, and Putin know about the poor security of the White House.