FILE - In this Oct. 4, 1995 file photo, President Bill Clinton greets Pope John Paul II during ceremonies upon their arrival at Newark International Airport in Newark, N.J. Air Force One is seen at background left. In 1965 Pope Paul VI made the first papal visit to the United States. Fifty years later, Pope Francis is scheduled to attend the World Meeting of Families in Philadelphia in September 2015. (AP Photo/Kathy Willens, File)