Administrative procedures relating to border crossings whether they fall within the competence of States or result from international agreements, such as visas or health and customs formalities, should be adapted, so far as possible, so as to facilitate to the maximum freedom of travel and widespread access to international tourism; agreements between groups of countries to harmonize and simplify these procedures should be encouraged; specific taxes and levies penalizing the tourism industry and undermining its competitiveness should be gradually phased out or corrected; (Source)
Would you tell me what the competence of States mean here? Does it equal National rules?