Well first we have American companies that own the stadium, I did see that tickets were sold for this event, and there was a lot of fund raising done by Catholic school kids to attend. Security must have been expensive of course, probably a little more then for a ball game. The original intent of separation of church and state was to not have undue influence or control of the government in politics. Otherwise you could also conclude that the Bush administration's push for religious based social programs over the last few years was also in conflict. Now how do you suppose that 150,000 people could take the Eucharist from one 82 year old man?