Sort of. There are still hard core believers but a lot of Catholic identity has been lost to the all consuming calvinist capitalist cultural morass. You can still do saint's days and observe all the different rituals and stuff if you want, but it's not as normative as it was even a few decades ago.

are there american saints even?

omfg there are only 13 if you really stretch it and only 2 are indigenous :data-laughing: the whole point of saints is having one for your town that you get to throw a rager about once a year. the black maw of american non-culture even extends to their religious cults