It is unlawful; but some agencies are operating without any rules and regulation; even without a license and conducting business solely from their home are operation illegally or sharing other business licenses.
The number of applicant with criminal records ranging from assault to petty theft is going up according to reports some applicants it screens annually are deemed unacceptable due to questionable histories, many resumes contains phony references and information.
As an employer can you tell ‘phony ID’ when you see it? A good screener "like us", we will know a references or identification is phony before the applicant even leaves the office. We get copies of identification, we ask specific questions on the application and then we match that information with the documents and references to be sure as possible that a reference is real. This action is conducted to ensure that the candidate is suitable for employment and it can be reliable, trustworthy of good conduct and character and loyal to client.
Please, keep in mind; an applicant’s whose resume and references are fabricated or incomplete is likelier to respond to personal ads for help wanted or other friend’s referral. Unfortunately, good personal references are no guarantee that the person to whom you're entrusting your helper is competent, or even safe.