The proposed right of family reunification is too much of a burden on receiving countries, making it an obstacle to a migrant rights treaty. Indeed, states have levelled as an argument against the Migrant Workers Convention, and against other possible international migrant treaties, concerns about a robust right of family reunification to all migrant workers present in migrant-receiving countries. This could offer family members a right to migrate into the state in question, resulting in large increases in population size. And, there is no doubt that the text of the Migrant Workers Convention aims to create a "right" to family reunification. Even if it provides flexibility on how a nation attempts to facilitate reunification, it still requires that states reunite families in some way. Under this treaty, therefore, any migrant could sue the state for not allowing his family (and perhaps extended family) to immigrate as well. In overpopulated and strained migrant-receiving countries, particularly in Western Europe, such a proposition is untenable, which is why so many migrant-receiving nations oppose the treaty.