According to the Geneva Unified Law concerning the commercial
papers (bill of exchange – promissory note – and cheque) and
domestic trade legislations which have quoted provisions of this
law, the capacity of a person to bind himself by the commer
cial
papers shall be determined by his national law.
But the difference of nationality rules from one country to another
in gaining nationality, losing it, retrieving it, and resolutions to be
followed in conflicts of nationality, lead, on the international level
to the situation of multiplicity of nationalities of people, people
without any nationality. Also person's right to change his nationality
which is considered a matter of human rights, represents the
problem of change in the national law that regulates the legal
relation, and the foreigner with incomplete capacity might use many
pulative ways to hide his lack of capacity to make the other think he
has full capacity. These situations are the problems facing the
application of national law on the capacity of the commercial
obligation.
