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People celebrate as senators approve a government-run marijuana industry in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate approved the world's first national marketplace for legal marijuana Tuesday, an experiment that puts the government in charge of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

People take part in a demo for the legalization of marijuana in front of the Legislative Palace in Montevideo, on December 10, 2013, as the Senate discuss a law on the legalization of marijuana's cultivation and consumption. Uruguays parliament is to vote Tuesday a project that would make the country the first to legalize marijuana, an experiment that seeks to confront drug trafficking. The initiative launched by 78-year-old Uruguayan President Jose Mujica, a former revolutionary leader, would enable the production, distribution and sale of cannabis, self-cultivation and consumer clubs, all under state control. PABLO PORCIUNCULA/AFP/Getty Images ( 525350429 )

Three men participate during the so called 'Last march of the illegal marijuana' summoned by the groups that have long stood for the legalization of marijuana in the streets of Montevideo, Uruguay, 10 December 2013. The march goes up to the Legislative Palace where the Senate is discussing the law that legalizes the production and sale of marijuana in Uruguay that will face final approval today. EPA/Sandro Pereyra ( URUGUAY MARIJUANA )

People march for the legalization of marijuana towards the Legislative Palace in Montevideo, on December 10, 2013, as the Senate discuss a law on the legalization of marijuana's cultivation and consumption. Uruguays parliament is to vote Tuesday a project that would make the country the first to legalize marijuana, an experiment that seeks to confront drug trafficking. The initiative launched by 78-year-old Uruguayan President Jose Mujica, a former revolutionary leader, would enable the production, distribution and sale of cannabis, self-cultivation and consumer clubs, all under state control. PABLO PORCIUNCULA/AFP/Getty Images ( 525350874 )

People attend a demonstration in support of the legalization of marijuana in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate approved the world's first national marketplace for legal marijuana Tuesday, an experiment that puts the government in charge of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

Two men participate during the so called 'Last march of the illegal marijuana' summoned by the groups that have long stood for the legalization of marijuana in the streets of Montevideo, Uruguay, 10 December 2013. The march goes up to the Legislative Palace where the Senate is discussing the law that legalizes the production and sale of marijuana in Uruguay that will face final approval today. EPA/Sandro Pereyra ( URUGUAY MARIJUANA )

Demonstrators participate during the so called 'Last march of the illegal marijuana' summoned by the groups that have long standed for the legalization of marijuana in the streets of Montevideo, Uruguay, 10 December 2013. The march went up to the Legislative Palace where the Senate legalized the production and sale of marijuana in Uruguay today. EPA/Sandro Pereyra ( URUGUAY MARIJUANA )

Demonstrators participate during the so called 'Last march of the illegal marijuana' summoned by the groups that have long standed for the legalization of marihuana in the streets of Montevideo, Uruguay, 10 December 2013. The march went up to the Legislative Palace where the Senate legalized the production and sale of marijuana in Uruguay today. EPA/Sandro Pereyra ( URUGUAY MARIJUANA )

Demonstrators participate during the so called 'Last march of the illegal marijuana' summoned by the groups that have long standed for the legalization of marihuana in the streets of Montevideo, Uruguay, 10 December 2013. The march went up to the Legislative Palace where the Senate legalized the production and sale of marijuana in Uruguay today. EPA/Sandro Pereyra ( URUGUAY MARIJUANA )

Activists gather in support of the legalization of marijuana outside the Congress building, as senators vote on a law to legalize the drug, in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate gave final congressional approval Tuesday to create the world's first national marketplace for legal marijuana, an audacious experiment that will have the government oversee production, sales and consumption of a drug illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( APTOPIX Uruguay Marijuana )

People celebrate after the Uruguayan senate approved a law legalizing marijuana in the Legislative Palace in Montevideo, on December 10, 2013. The initiative launched by 78-year-old Uruguayan President Jose Mujica, a former revolutionary leader, will enable the production, distribution and sale of cannabis, self-cultivation and consumer clubs, all under state control. MIGUEL ROJO/AFP/Getty Images ( 525352542 )

An activist smokes a marijuana cigarette as they poses for photos in front of the Congress in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate approved the world's first national marketplace for legal marijuana Tuesday, an experiment that puts the government in charge of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

People attend a demonstration in support of the legalization of marijuana in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate was finishing its final debate Tuesday before voting on a plan to create the world's first national marijuana market, with the state regulating the entire process of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

People attend a demonstration in support of the legalization of marijuana outside the Congress in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate was finishing its final debate Tuesday before voting on a plan to create the world's first national marijuana market, with the state regulating the entire process of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

A demonstrator wears a top hat emblazoned with an image of a marijuana leaf as activists gathered in support of the legalization of marijuana outside the Congress building in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate gave final congressional approval Tuesday to create the world's first national marketplace for legal marijuana, an audacious experiment that will have the government oversee production, sales and consumption of a drug illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

A man smokes a marijuana cigarette during a demonstration in support of the legalization of marijuana outside the Congress in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate was finishing its final debate Tuesday before voting on a plan to create the world's first national marijuana market, with the state regulating the entire process of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

People attend a demonstration in support of the legalization of marijuana outside the Congress in Montevideo, Uruguay, Tuesday, Dec. 10, 2013. Uruguay's Senate was finishing its final debate Tuesday before voting on a plan to create the world's first national marijuana market, with the state regulating the entire process of growing, selling and using a drug that is illegal almost everywhere else. (AP Photo/Matilde Campodonico) ( Uruguay Marijuana )

A man smokes a joint during a march for the legalization of marijuana towards the Legislative Palace in Montevideo, on December 10, 2013, as the Senate discuss a law on the legalization of marijuana's cultivation and consumption. Uruguays parliament is to vote Tuesday a project that would make the country the first to legalize marijuana, an experiment that seeks to confront drug trafficking. The initiative launched by 78-year-old Uruguayan President Jose Mujica, a former revolutionary leader, would enable the production, distribution and sale of cannabis, self-cultivation and consumer clubs, all under state control. PABLO PORCIUNCULA/AFP/Getty Images ( 525350937 )