Any questions why President Trump seems to have an affinity for fast food? Who knows who is the ultimate recipient of that Big Mac and fries. Bad diet, but definitely some safety with regard to nefarious activity.
IIRC I read that he said (thus second hand) that when he travels, he knows exactly what he will be eating if it is from McDonalds, Wendys, and named a couple of others. This was during the campaign before it appeared that anyone was desperate enough to try to poison him.