From socially-distanced gatherings outside to virtual masses, Easter has been tempered for a second year amid lockdowns and pandemic restrictions.
Worshippers in Israel were allowed to attend scaled-back Good Friday celebrations which were cancelled last year.
Palm Sunday marks the beginning of the Holy Week before Easter.
The decree distinguished between the church’s welcoming and blessing of gay people, which it upheld, but not their unions since any such sacramental recognition could be confused with marriage.
Biden said he hopes to work with Pope Francis on issues such as climate change, poverty and immigration.
Carlo Acutis who died of leukemia in 2006 was described as the "patron saint of the internet".