Following are links to stories relating to the apparent religious fervor of host-families and exchange organization representatives in the USA. Please note that I have not listed these in any particular order with regard to alphabet or year. I believe the earliest story is from 2004 and the newest from July of 2014.
“Would you be willing voluntarily to inform the exchange visitor
in advance of any religious affiliations of household members? (Y/N)
Would any member of the household have difficulty hosting a
student whose religious beliefs were different from their own? (Y/N)
Note: A host family may want the exchange visitor to attend one or more religious services or programs with the family. The exchange visitor cannot be required to do so, but may decide to experience this facet of U.S. culture at his or her discretion.” (75 FR 65975)