ot since the Great Depression has the United States seen a tide of anti-immigrant sentiment to rival today's. So strong is public feeling

that it helped drive President Bill Clinton to re- verse the nation's long-held policy of welcom- ing any refugee who managed to escape from Fidel Castro's Cuba. Instead of a hero's wel- come, the Cuban boat people received inglo- rious confinement in Panama or at the U.S. na- val base in Guantanamo Bay.
Two years earlier, after the 1992Los An- geles riots, Pa...