I sympathise with your SIL's difficulties. However, I am pleased to hear that there is serious verification of standards. After all, look what happened when we didn't really check the competency of doctors.
Jayant Patel is an Indian-American former surgeon and convicted fraudster. Patel was accused of gross negligence whilst working at Bundaberg Base Hospital in Queensland, Australia
IIRC his qualifications and history were not verified when he was hired.