Norte del Valle, and North Coast. However some guerilla warlords in the Colombian conflict were also said to be involved in drug trafficking in the country. The Medellin Cartel was once the largest drug cartel operating in Colombia, led by Pablo Escobar which focused its operations in the city of Medellin. Most of the imported drugs are originated from countries like Bolivia and Peru which were later processed in Colombia. The Medellin Cartel gained prominence in the 1980s when the cartel amassed $60 million worth of fortune from drug trade sold to United States mainly focused on Florida, New York, and California. This condition has shocked the United States federal government and caused the federal government to make a deal with Colombian government to sign the extradition treaty between two countries. Escobar's business empire was known for its "reign of terror" as the cartel staged numerous kidnappings, assassinations and bombings around Colombia to ensure its business continuity. Pablo Escobar was shot to death by police in 1993; after the death of Pablo Escobar, the Medellin Cartel began to decline which eventually led to its disbandment. The disbandment of the Medellin Cartel has led to other three major cartels, especially the Cali Cartel, to seize the opportunity to expand their trade routes. During the drug war, major Colombian cartels were known to be influencing Colombian politicians and warlords alike. In order to flex his muscle, Escobar went to politics and ran as candidate for the Chamber of Representatives under the banner of the Liberal Alternative. However Escobar's ambition in politics was later thwarted after his ill-gotten wealth was exposed in front of the representatives, which forced him to resign. This event become the root cause of the assassination of justice minister Rodrigo Lara Bonilla. In contrast to the Medellin Cartel, the Cali Cartel adopted a more subtle approach on influencing local politicians. In 1994, the outgoing president Ernesto Samper was involved in the Proceso 8000 scandal in which he was accused of being funded with drug money, allegedly from the Cali Cartel for his campaign in the 1994 Colombian presidential election. The scandal later caused the then US president Bill Clinton to cut Colombian aid, while later the US government revoked Samper's visa. Guinea-Bissau Guinea-Bissau, in West Africa, has been called a narco-state due to government officials often being bribed by traffickers to ignore the illegal trade. Colombian drug cartels used