B.
3.54 Contracting States and operators shall cooperate, where practicable,
in establishing the validity and authenticity of passports and visas that are
presented by embarking passengers.
3.54.1 Recommended Practice.- The appropriate public authorities of
Contracting States, either singly or jointly, should enter into cooperative
arrangements such as memoranda of understanding (MOUs) with the
operators providing international services to and from those States, setting
out guidelines for their mutual support and cooperation in countering the
abuses associated with travel document fraud. Such arrangements should
assign mutual responsibilities to the public authorities and to the operators,