Drug problems are on the rise in the United States, and the government has implemented strict measures to control this issue. Drug laws in the U.S. penalize anyone who is involved in the production, transportation or selling of banned substances. The punishment depends on the type of drug, the amount being transported, or the target market. The most common drugs being misused in the U.S. are marijuana, heroin, cocaine and methamphetamine. Drug trafficking is the possession of illegal substances with the intention of selling to others. A sentence of 3-5 years is common for people found guilty of drug trafficking. Drug trafficking is a far more serious offense than drug possession.