I just watched an episode of West Wing where the President is lecturing his college age daughter on the need for secret service protection. He told her the scenario of daughter getting kidnapped and held with a gun to her head while he as President is given 72 hours to comply with a demand to convince Israel to free some terrorists.
Is any protection given to a President’s parents (if he is young enough for them to be alive) or brothers and sisters?
While not as strong as the feelings for a child, a terrorist with a gun to their parent or sibling’s head would still put the President in a difficult emotional spot between following policy and using his power to save a family member.