The commonly held view that liberal democracies cannot effectively con
trol unwanted migration is unwarranted despite the intensification of
migration pressures in recent years. To develop a more accurate positi
on built on less sweeping generalizations, I disaggregate migration po
licy into four parts: managing legal immigration, controlling illegal
migration, administering temporary worker programs, and processing asy
lum seekers and refugees. A review of the experiences of the liberal d
emocracies with each of these migration challenges indicates that alth
ough there are numerous instances of policy failure, there is also con
siderable capacity to regulate migration. I argue that this capacity i
s certainly growing, not declining, over time, that some states posses
s more capacity than others, that the control capacities of particular
states vary substantially across the four areas, and that these capac
ities fluctuate periodically in conjunction with contingent cycles of
salience and effort.