"In the late 1980s, Hilton was among the first luxury hotel brands to utilize the service, " says Mike Bare, co-owner and president of Bare International and one of the original founders of the MSPA. Three decades later, it's common practice among hotel brands around the world. (Proof: LRA recently opened a satellite office in busy Singapore.) And soon enough, its taciturn nature may be over.

CNN: Confessions of a hotel mystery shopper

First, this is a classic oath on oath, he-says-she-says swearing match, that under ordinary custom and practice at the Department of Justice never would be prosecuted without substantial corroborative proof.

CNN

Most children are registered with a family doctor, but Fizza Qureshi, who runs Project London for Doctors of the World, a charity, says this is getting harder as practice managers insist on proof of status first.

ECONOMIST: Migrant children

Some see it as reversing the burden of proof on businesses that want to launch a product, use a chemical or adopt a new practice.

ECONOMIST: The price of prudence