Adoption in law or “in fact” is a fairly generally used term in federal legislation, simply because adoption per se is within provincial jurisdiction, and yet federal benefit programs wish—for policy reasons, in many instances—to cover those children who are part of the household on a factual basis.
Toutefois, très souvent, pour des raisons politiques, on souhaite étendre les programmes fédéraux de prestations aux enfants qui, de fait, font partie d'un foyer.