This seminar introduces students to the empirical literature on drivers of migration, how the (economic) integration of immigrants can be measured, and what role policies play for immigration- and integration processes. An explicit focus lies on causal inference of said mechanisms. Seminar participants should have prior knowledge on basic econometric modelling (OLS). Knowledge on causal inference is of advantage. We will critically(!) discuss seminal, provocative, and original empirical studies on the key questions surrounding migration and integration. Why do people migrate? How do immigrants become part of a society and what role does discrimination play? How does immigration shape host societies? And what are the (unintended) consequences of immigration policies? During the seminar, we will get to know contemporary quantitative methods that have been introduced to allow for causal statements.