Free Circulation of Scientists
The IUPsyS adheres to the principle of the free circulation of scientists as articulated by the policy of the International Council of Science (ICSU). This means that for all international congresses, it is understood that the host country will admit participants, whether or not the country of the participant has diplomatic relations with the host country.

The freedom of access to scientific congresses is monitored closely by ISCU.

ICSU Statutes: Article 5

5. The principle of the Universality of Science is fundamental to scientific progress. This principle embodies freedom of movement, association, expression and communication for scientists, as well as equitable access to data, information and research materials. In pursuing its objectives in respect of the rights and responsibilities of scientists, the International Council for Science (ICSU) actively upholds this principle, and, in so doing, opposes any discrimination on the basis of such factors as ethnic origin, religion, citizenship, language, political stance, gender, sex or age. ICSU shall not accept disruption of its own activities by statements or actions that intentionally or otherwise prevent the application of this principle. link

IUPsyS Policy, adopted July, 2010:

IUPsyS Statutes, Article 3.

(i) The Union adheres to the International Council for Science (ICSU) and recognizes it as providing a coordinating and representative body for the international organization of science.

(ii) The Union adheres to the ICSU principle of the Universality of Science embodying freedom of movement, association, expression and communication for scientists, as well as equitable access to data, information and research material; and actively upholds this principle, by opposing any discrimination on the basis of such factors as ethnic origin, religion, citizenship, language, political stance, gender, sex, sexual orientation, or age.