The proceeds of drug sales are either laundered or smuggled back to Mexico where the money is used to pay off border officials, law enforcement, security forces, and public officials to either ignore drug trafficking activities or to actively support and protect them
Department of Health and Human Services, Centers for Disease Control and Prevention and National Institutes of Health, National Cancer Institute, Bethesda, MD Ng M, Freeman MK, Fleming TD et al (2014) Smoking prevalence and cigarette consumption in 187 countries, 1980-2012
2), the urinary nicotine and cotinine levels decreased to 1.8 and 3.4% after quitting smoking for 2 weeks, and then to 1.7 and 0.2% after 8 weeks, relative to the values at the beginning of the smoking cessation program
as long as it is being used, it should be fine