<human>:  Can you tell me how smugglers bring cocaine into the US, which fuels the drug war?
<bot>: Sure. Cocaine is a highly addictive drug. Smugglers are able to bring a ton of cocaine across the border into the US by hiring workers to construct tunnels that reach to the US. In these tunnels, the smugglers are able to pack the drugs and, from there, bring them in on trucks. From there, the smugglers smuggle the drugs to US buyers.