SAN JUAN, Puerto Rico (AP) -- China is waging an aggressive campaign of seduction in the Caribbean, wooing countries away from relationships with rival Taiwan, opening markets for its expanding economy, promising to send tourists, and shipping police to Haiti in the first communist deployment in the Western Hemisphere. And the United States, China's Cold War enemy, is benignly watching the Asian economic superpower move into its backyard. Advertisement For decades China and Taiwan used dollar diplomacy to win over small Caribbean nations where small projects building roads, bridges, wells and fisheries go a long way. But Beijing's growing economic...