Why can't anyone be born with Vatican nationality?

There are no hospitals or maternity hospitals in the country, which makes births almost impossible to take place; citizenship is granted only to those with ties to the Holy See. Vatican City is the smallest country in the world. Surrounded by Rome, Italy, and situated on the west bank of the Tiber River, the nation is also the seat of the Catholic Church. Within the small independent state are St. Peter's Basilica, the Sistine Chapel, the Vatica…