Interesting to note that the impending trip of a US President to the ancestral home in Ireland requires the safe supply of beer:

The US secret service is to supply beer kegs to a pub US President Barack Obama is expected to visit in Moneygall, Co Offaly. Security surrounding the trip will be so controlled that the agents will be supplying Ollie Hayes's bar with the barrels, the Herald can reveal. It is understood the decision was taken as President Obama is likely to have a drink if he visits the pub.The tiny village of Moneygall is planning a festival for the historic occasion. President Obama, whose great-great-great-grandfather came from Moneygall, plans to set foot in his ancestral home during his two-day visit to Ireland.

One can only assume that the casks are already in the hands of the state being quarantined and tested, no doubt, by expert secret service beer testers. But would you not have to control the brewery to make sure nothing bad went in at production? Yet what if the danger is not in the beer but somewhere else... in the bung.... or maybe the spile. How would Agatha Christie have imagined the whodunnit playing out?

So, do the US secret service provide everything else, too? Is there a stash of pork rinds, crisps and whatever else might earn the Presidential eye in a pub? And, once the danger passes, do secret service beer testers and pork rind protectors get to take their work home?