US President Barack Obama was in Costa Rica yesterday for a summit with central American leaders on trade, immigration and the drug war. They pressed Obama to step up US assistance against drug cartels that use the region as a stopover for US-bound cocaine. Meanwhile, activists worry that the government is still sending police to the US-based School of the Americas for training. The school made headlines in 1996 when the Pentagon admitted that torture and execution was among the classes taught by instructors. Hendrik Voss has been campaiging against the school.