A Walter Reed spokesperson says that the eldest son of vice president Biden was hospitalized at a military hospital because it was secure enough to allow regular visits from his father. She will not say whether he remains there, contending that releasing any information would violate his privacy.
[The hospital] often admits individuals as a matter of security precaution. The vice president and Dr. (Jill) Biden’s regular visits to see their son necessitate his treatment in a facility that is more secure than a traditional hospital.
It remains unclear when Biden was admitted.