Obama has a personal food taster. He is afraid he will be poisoned. He has received more death threats than any other president in history.

Regarding his food. Presidents are given an entertainment budget. As long as he invites someone to dinner, other than just his family, the gov pays the bill. That's the government. The Attaches and ambassadors, etc have the same bennies. One glass of wine from a bottle that is used for entertaining, one shot of liquor, etc. and the rest can be used for a party at a later date...and it is done all the time. Government work does have it's benefits.