Complex sentence: Exaggerated fears over child safety in amateur sports in Canada drastically curtailed billeting practice, as mandatory criminal record checks were instituted for all involved in amateur sports, including coaches, volunteers and anyone over eighteen years of age from the host family.
Split into simpler sentences: Exaggerated fears over child safety in amateur sports in Canada drastically curtailed billeting practice. Many places do not billet and the others have mandatory criminal record checks were instituted for all involved in amateur sports, including coaches, volunteers and anyone over eighteen years of age from the host family.