Catholicism is the State Religion of Mexico among other countries.
Why should they think the Government isn't paying for it?
Methinks you are a bit confused here.
Mexico doesn't *have* a state religion, and in fact the PRI (THE major political party in Mexico) has a rather long history of persecuting Catholics, even going as far as using the regular Mexican Army to KILL both Catholic clergy, and their congregations in the 1920's-1930's. Google the Christero War to get informed.
FWIW, the Catholic Church did not receive the minimal guarantees of their right to worship under provision of the latest Mexican constitution until the 1980's.
If THAT is being 'the State Religion' I'll eat my hat...
the infowarrior