Canada, North American Free Trade Agreement…
“ In order to promote fair, open and impartial procurement procedures, each Party shall adopt and maintain bid challenge procedures for procurements covered by this Chapter in accordance with the following: (a) each Party shall allow suppliers of any good or service of another Party to submit bid challenges concerning any aspect of the procurement process, which for purposes of this Article begins after an entity has decided on its procurement requirement, leading up to and including the contract award ”
