NOT even security:

Three Secret Service agents responsible for protecting President Obama in Amsterdam this week were sent home and put on administrative leave Sunday after going out for a night of drinking, according to three people familiar with the incident. One of the agents was found drunk and passed out in a hotel hallway, the people said.

[…] The alleged behavior would violate Secret Service rules ­adopted in the wake of a damaging scandal in Cartagena, Colombia, in April 2012, when a dozen agents and officers had been drinking heavily and had brought prostitutes back to their hotel rooms before the president’s arrival for an economic summit.

Under the requirements, anyone on an official trip is forbidden to drink alcohol in the 10 hours leading up to an assignment. As members of the advance team for a presidential trip, the CAT members would have been called to duty sometime Sunday for a classified briefing ahead of the president’s arrival on Monday. Drinking late into the night Saturday evening and Sunday morning would have violated that rule.

Imagine the scene: one of the hulk-sized guys protecting the president (I've seen then in person and they're HUGE and intimidating), on the floor, passed away, totally waster. I'd say that's unthinkable in previous modern-era presidents.