The cloak-and-dagger legacy of Barry Seal lives on in a little town in Arkansas, three years after the international drug smuggler-turned-informer was assassinated. Seal is believed to have introduced the Medellin cocaine cartel of Colombia to the United States. He flew drugs and arms in and out of the Arkansas town of Mena in the Ozarks. In 1986, after Seal became a snitch for the Drug Enforcement Administration (DEA), the cartel gunned him down in Baton Rouge. Just what arrangement Seal had with the U.S. government is unclear. Investigators in Louisiana and Arkansas say Seal was allowed to continue smuggling drugs and guns while he spied for the government. Arkansas state police suspect the airport in Mena is still a hub for illegal arms and drug trafficking. Frustrated investigators told our associate Jim Lynch that the full story on Seal could make a mockery of the administration's war on drugs. In April 1986, two months after Seal was killed, two Louisiana state police investigators blamed the DEA for failing to protect Seal from the cartel. They said the DEA allowed Seal to pose as a drug smuggler under cover and continue his lucrative business as a real smuggler at the same time. Seal testified at one point that he made $500,000 during one year as an informer. The Louisiana attorney general asked then-U.S. Attorney General Edwin Meese III to investigate the handling of Seal. Meese never responded. Seal left a resume unrivaled in the smuggling business. He was a pilot for TWA in the early 1970s and quit to fly drugs and arms around the world. By the late 1970s, Louisiana police were tracking the smuggler they called the "fat man." Seal moved his operation to Mena. When he was arrested in 1984, he offered his services to the DEA. Arkansas officials have pushed for a federal grand jury to investigate Seal's enterprise and any remnants that might be operating in Mena. But the U.S. attorney in Arkansas says there is not enough evidence. Rep. Bill Alexander (D-Ark.) smells a cover-up and has suggested convening a state grand jury. The House Judiciary subcommittee on crime sent a sleuth to Mena last year. The Seal case is expected to be a centerpiece in the committee's upcoming report on how the federal government interferes in local law enforcement. One Arkansas state police official told us that he turned over a box of documents to the Federal Bureau of Investigation on Seal and associates. The FBI later claimed the documents were "lost." Scattered evidence indicates Seal was part of the Nicaraguan contra resupply network. A plane carrying weapons and piloted by Eugene Hasenfus when it crashed in Nicaragua in 1986 belonged to Seal. After Seal died, investigators from the Internal Revenue Service raided his offices in Mena and seized financial records. The IRS report on Seal is being kept under wraps, but we have learned its title, "Contra Mena Connection."