In Globalization and Global Justice, Nicole Hassoun presents a new andfundamental challenge to libertarian political thought. Her LegitimacyArgument tries to show that natural rights libertarians are committed bytheir own principles to a requirement that their states recognize and meetthe positive welfare rights of certain merely potentially autonomous persons.Unfortunately, this argument suffers from two flaws. Hassoun needs to show,but has not shown, that the libertarian state would have to infringe any ofthe negative rights of the merely potentially autonomous in such a way asto require consent from them. Moreover, the libertarians could arrange theirinstitutions, justifiably by their own lights, so as to expel all indigent, merelypotentially autonomous persons from their territory. This second solution isintuitively unpalatable, but may be no more morally problematic than thebasic natural rights libertarian view itself.

Universitat Pompeu Fabra