This article examines the problem facing an advanced, final-destination country as it seeks cooperation from its less-well-off neighbors to impede unauthorized, third-country migrants from transiting their territories. With that aim, it transfers aid to the transit countries in support of their...

Immigration enforcement cooperation between final destination and transit countries has increased in the last decades. However, the question whether these measures are successful in deterring undocumented migrants has not been previously explored by the empirical literature. This paper examines...