AdvertisementBuilt By Immigrants, U.S. Catholic Churches Bolstered By Them Once AgainSeptember 09, 2015Tom GjeltenMarisa PeñalozafacebookEmailVietnamese-Americans light candles at St. Helena, a Catholic church in Philadelphia, on April 4. Like many other once-struggling churches, St. Helena has been revitalized by immigrant parishioners. About 200 Vietnamese families worship at this church, along with others from Latin America, the Philippines and Africa. (Matt Rourke/AP)