I've known it for some time, as a single woman trying to conceive who has insurance based in Maryland. Slate has also written about it:
http://www.slate.com/id/2248051/
I'm not sure that this could be pinned on the Catholic church specifically, though. There are a lot of groups that are squeamish about single women and gay people conceiving children. It is unfortunate.
Of course, we could live in a state that doesn't mandate IVF coverage at all, which would be most of them. Only 15 states require that insurers have an IVF mandate. If my employer were based in Virginia or D.C., I very well might be in the same boat. Or if I worked at a company with fewer than 25 or 50 employers, I'd also be out of luck. So I can't feel too sorry for myself.
http://www.fertilitylifelines.com/payingfortreatment/state-mandatedinsurancelist.jsp