This book theorizes a continuum of ever-more ambitious methods through which cause lawyers use constitutionalized human rights law to benefit refugees. Lawyers use different tools as they move along this continuum, including strategic litigation, training governmental officials in the applicable law, and various forms of informal advocacy. It makes important contributions to three strands of socio-legal literature. As to the effectiveness of human rights treaties, it provides qualitative evidence of how such treaties achieve greater significance when incorporated into national constitutions. As to refugee law, it analyses how international protections for refugees become stronger when domestic lawyers enforce them through national constitutions. And as to cause lawyering, it shows how refugee lawyers use constitutionalized human rights law to protect their clients.