Reciprocity is a necessary feature of any agreement. If not all necessary parties are winners of the agreement as a whole, there is no incentive to approve it. In the event of an agreement, it can be considered that each party expects to win at least as much as to lose. For example, in exchange for removing barriers to country B products, thereby benefiting A consumers and B producers, country A will insist that country B remove barriers to country A products, which will benefit country A producers and, possibly, consumers of B. All agreements concluded outside the WTO framework (which confer additional benefits beyond the WTO most-favoured-nation level, but which apply only between signatories and not other WTO members) are considered preferential by the WTO. Under WTO rules, these agreements are subject to certain requirements such as notification to the WTO and general reciprocity (preferences should apply equally to each signatory) when unilateral preferences (some signatories enjoy preferential market access from other signatories without reducing their own customs duties) are allowed only in exceptional circumstances and as a temporary measure.  In addition, Canada is strongly committed to greater transparency in trade in services. It requires all Contracting Parties to publish proposed laws and regulations in advance and to allow interested parties to comment on those proposed laws and regulations. Canada also applies domestic regulatory rules to ensure transparency and objectivity of licensing and qualification requirements for certain services, while respecting and granting each party`s right to regulation in the public interest. Even in the absence of the constraints imposed by most-favoured-nation clauses and domestic treatment, general multilateral agreements are sometimes easier to reach than separate bilateral agreements. In many cases, the potential loss of a concession to one country is almost as large as that which would result from a similar concession to many countries.
The benefits that the most efficient producers derive from global tariff reductions are large enough to warrant considerable concessions. Since the establishment of the General Agreement on Tariffs and Trade (GATT, implemented in 1948) and its successor, the World Trade Organization (WTO, established in 1995), global tariff rates have fallen significantly and world trade has expanded. The WTO contains provisions on reciprocal conditions, most-favoured-nation status and national treatment of non-tariff restrictions. It has contributed to the architecture of the most comprehensive and important multilateral trade agreements of modern times. These trade agreements and their representative institutions are the North American Free Trade Agreement (1993) and the European Free Trade Association (1995). The agreement prohibits government mandates that require the disclosure of software source code as a prerequisite for the distribution of such software and related services, and states that “no party may require the transfer of or access to the source code of software owned by a person belonging to another party as a prerequisite for the provision of services related to such software in its territory.”  While there are exceptions for “critical infrastructure software” and non-mass market software, the agreement would prevent, for example, governments from forcing consumer network providers to provide the source code of the software for security reasons.  A clause relating to the “seizure of non-tariff restrictions” is necessary, as most tariff characteristics can be easily duplicated with a set of non-tariff restrictions designed accordingly. . . .