Mexican drug cartels are responsible for the market for illegal substances in many American cities. Marijuana makes up a significant portion of their income, and legalizing it would lower prices for the drug across the country. Former federal agent Terry Nelson said drug cartels "are not able to transport that much cannabis." This is demonstrated by the fact that marijuana accounts for up to forty percent of drug cartels' revenues from this drug. New legalization efforts leading to a nationwide legal status for the drug would mean that cartels would not engage in as much smuggling as in the past (O'Hara, 2014). Drug cartels receiving less revenue would be a victory for the United States. There would be less marijuana-related smuggling across the U.S. border with Mexico. There are also fewer drug-related arrests in the south of the country. An important part of American society is public funding in certain areas. Marijuana would increase tax revenue that would be invested in public services and facilities such as schools and hospitals. Marijuana is increasing commerce in legalized states. Tourism is increasing in the state due to outsiders trying to get their hands on some of the action. Tourism is likely to double due to drug legalization. More people would like to be able to find a place to buy it legally. Denver, the state capital of Colorado, has seen an increase in out-of-state visitors compared to previous years. A Denver International Airport spokesperson