THE TREASURY Department's just-disclosed program of searching records of overseas bank transfers may provoke outraged comparisons to the National Security Agency's warrantless surveillance and data-mining of telephone call records... So far, however, it seems like exactly the sort of aggressive tactic the government should be taking in the war on terrorism. For one thing, it appears to be legal. The government is receiving large volumes of data detailing financial transfers from the Society for Worldwide Interbank Financial Telecommunication (SWIFT), a Belgium-based consortium that acts as a kind of messenger service for banks around the world, electronically notifying banks of transactions...