Supporters of open borders sometimes argue that the state has no pro tanto right to restrict immigration, because such a right would also entail a right to exclude existing citizens for whatever reasons justify excluding immigrants. These arguments can be defeated by suggesting that people have a right to stay put. I present a new form of the exclusion argument against closed borders which escapes this “right to stay put” reply. I do this by describing a kind of exclusion that (...) has not been discussed in depth, which I call “territorial exclusion.” Territorial exclusion is the process according to which the group that wishes to exclude current citizens secedes from the territory in which those citizens reside. I argue that the wrongness of territorial exclusion explains why there is no pro tanto right for a state to exclude immigrants, because otherwise there would be a pro tanto right for the state to kick people out by seceding from the territory they inhabit. Because kicking people out like this is typically wrong, borders cannot be closed. (shrink)

The secession of prosperous regions may negatively affect the redistributive scheme of an established state. As a consequence, the capacity of its welfare system to support the inhabitants of poorer regions may be significantly reduced. Some authors assert that affluent groups who opt for full political independence violate duties of solidarity. This objection to the secession of prosperous regions can be based on different views of distributive justice. Here, following a distinction that has been introduced by Allen Buchanan, ‘subject centred’ (...) and ‘justice as reciprocity’ theories are explored. It is argued that both theories fail to support the case against the secession of wealthy groups. ‘Subject centred’ theories cannot explain special duties toward compatriots, whereas ‘justice as reciprocity’ theories cannot justify restrictions on exit rights. However, this does not mean that separatists have no moral duties vis-à-vis their fellow citizens. They are obliged to dissolve the political union in a fair way, e.g., by accepting responsibility for some share of the public debts. (shrink)