City sponsored Papal visits deny separation of church and state

Greetings everyone I am curious about how strict "separation of church and state" is in the United States. If a city pours several public resources into a Pope visit, from money to public road and facility closures, impacting the business of neighboring private businesses, etc.... does that impinge on church and state separation? I watched the local channel in my city last night and they reaired the voting on the invite of the Pope. Nearly all of the city council members waxed philosophical about their own Catholicism or religious nostalgia before rubberstamping 100 million or what have you for a church leader from a faraway land to take over the town. How is this constitutional? Please note I am not against the Pope. I do not hold a religion and I like this man sort of. Actually I have no opinion either way. I was not personally inconvenienced but I do not see how this is constitutional.

architecture design architect planning projects building