A Bolivian woman gives her baby coca leaves during a protest in front of the U.S. Embassy in La Paz, January 31, 2011. Bolivia is considering denouncing the Vienna Convention on Narcotics Drugs if the U.N. fails to accept Bolivia's request to ammend the 1961 accord that penalizes the traditional uses of coca leaves, President Evo Morales said on Monday. REUTERS/David Mercado (BOLIVIA - Tags: SOCIETY POLITICS)