[Fithal the Wise]

What are these (social) programs, and how do Catholics get money through them?

do a little research

“Religious organizations also receive large infusions of federal funds. Catholic Charities USA receives more than half of its funding each year ($554 million in 2010) from federal grants.”

http://www.forbes.com/sites/howardhusock/2014/07/31/how-government-threatens-religious-charity-lessons-of-new-yorks-met-council-scandal/

[dsc]

“Catholic Charities USA”

Perhaps you meant to say that Catholic Charities USA receives money rather than Catholics receive money.

Catholic Charities USA does not restrict itself to Catholics, nor, best I can tell, does it even favor Catholics in its charitable activities.