4. Calls upon all States to consider reviewing and, where necessary, revising immigration policies with a view to eliminating all discriminatory practices against migrants and their families and adopting effective action to create conditions that foster greater harmony, tolerance and respect within societies, and to provide specialized training for government policymaking, law enforcement, migration and other concerned officials, including in cooperation with non-governmental organizations and civil society;
4. 吁请所有国家考虑审查并在必要时修订移民政策，消除针对移徙者及其家属的一切歧视性做法，同时采取有效行动，创造条件，促进社会内部更大的和谐、容忍与尊重，并通过与非政府组织和民间社会合作等方式，向政府政策制订人员、执法人员、移民官员及其他相关人员提供专门培训；