This book interrogates the challenges facing asylum and citizenship law. Global citizenship is in a period of flux: statelessness, visa bans, and citizenship-based retribution are all on the rise. This collection tackles these issues through diverse perspectives, including doctrinal, legal-historical, and critical. Experts, both practitioners and scholars, draw on the legacy of Sir Richard Plender, one of the seminal authorities in the field, to grapple with the challenges facing contemporary citizenships frameworks.