Immigration, and Common Identities: A Social Cohesion-Based Argument for Open Borders

What does social cohesion require in culturally diverse post-immigration societies? Immigration and social cohesion are, in the public debate, believed to be incompatible. In normative political philosophy, a similar understanding manifests in the argument that social cohesion-based on a common national identity-is incompatible with immigration. In so doing, its proponents justify restrictive border policies. In this chapter, I will critically engage with this argument by reconnecting the literature in social sciences to normative political philosophy. I will offer a conditional and pro tanto argument that social cohesion in post-immigration societies justifies open and non-discriminatory border policies. My argument is conditional in two senses: first, it assumes social cohesion is based on a common identity, and second, it only applies to the societies with significant cultural, religious, and ethnic diversity that can be best described as post-immigration societies. My argument implies that liberal nationalists have a choice: they can either keep defending social cohesion in the traditional way, which comes with open borders; or they can abandon this view, thereby losing one of the strongest justifications for restrictive borders.