As a comparison, in Chile and the U.S., taxes were 18.6% and 26.9% of GDP respectively. However, direct taxes on income are very hard to enforce and in some cases tax evasion is seen as a national pastime. Impact on growers The status of coca and coca growers has become an intense political issue in several countries, including Colombia and particularly Bolivia, where former president Evo Morales, a former coca growers' union leader, promised to legalise the traditional cultivation and use of coca. Indeed, legalization efforts yielded some successes under the Morales administration when combined with aggressive and targeted eradication efforts. The country saw a 12–13% decline in coca cultivation in 2011 under Morales, who used coca growers' federations to ensure compliance with the law rather than providing a primary role for security forces. The coca eradication policy has been criticised for its negative impact on the livelihood of coca growers in South America. In many areas of South America the coca leaf has traditionally been chewed and used in tea and for religious, medicinal and nutritional purposes by locals. For this reason many insist that the illegality of traditional coca cultivation is unjust. In many areas the U.S. government and military has forced the eradication of coca without providing for any meaningful alternative crop for farmers, and has additionally destroyed many of their food or market crops, leaving them starving and destitute. Impact on employment Critics note that the War on Drugs also creates an artificial shortage of workers in the labor force due to random drug testing. For example, according to the Department of Transportation, in 2020, 70,000 truck drivers were fired due to testing positive for cannabis use. This is during a period in which 70% of Americans claim to experience product shortages and delays. Additionally, the American Trucking Associations claims that the trucking industry is short 80,000 truck drivers, a number that could potentially double by 2030. Furthermore, the Federal Motor Carrier Safety Administration increased the amount of random drug tests from 25% of the average number of driver positions to 50%, which, critics note, will result in an even greater amount of truck driver and supply shortages. Allegations of official involvement in drug trafficking The CIA, DEA, State Department, and several other U.S. government agencies have been alleged to have relations with various groups which are involved in drug trafficking. CIA and Contra cocaine trafficking