From Crux:
Now that Joseph Biden has officially tossed his hat into the ring for the Democratic nomination as President of the United States, he’s quickly become his party’s presumptive front-runner despite the fact that he’s tried twice before without notable success.
Biden and his wife are both Roman Catholics and regularly attend Mass at St. Joseph’s on the Brandywine in Greenville, Delaware. He wears a rosary on his left wrist, a gift his younger son, Hunter, gave to his older son, the late Beau Biden, after a visit to the shrine of Our Lady of Guadalupe. Biden’s experience of the Vatican while holding political office dates to at least June 2011, when he traveled to Rome for an unannounced private visit to then-Pope Benedict XVI. President Barack Obama had met Benedict in 2009.