This paper examines the nature of the migration and trading
regimes in Western industrialized nations (i.e., the United States
and the European Union (EU)) through the lenses of various
disciplines, including law. An important theme in the paper is
the two-way relationship between the trading order and the
migration regime. Specifically, I inquire into the linkage between liberalized trade and the incentives to migrate internationally. Conversely, does liberalized migration create or replace trade in goods and services across trading partners? While each of the trading and migration regimes is characterized by a labyrinth of legal rules, these regulatory aspects are firmly rooted in and reactive to other disciplines, including economics, political science, public choice, sociology, anthropology, criminology, and international relations.