Bolivian President Carlos Mesa refused to promulgate a Hydrocarbons Law that Congress sent him on May 6, leaving it up to Senate president Hormando Vaca Diez to sign the bill. The law failed to satisfy indigenous and labor sectors that wanted either a larger increase in the tax and royalties charged to corporations for hydrocarbons or the complete nationalization of hydrocarbon resources, as well as petroleum corporations that have contracts with Bolivia and business organizations within the country. Mass protests paralyzed the capital while a cartel of petroleum companies froze investments in Bolivia.
NotiSur writers. "BOLIVIA: MASSIVE PROTESTS AFTER CONGRESS PASSES HYDROCARBONS LAW." (2005). http://digitalrepository.unm.edu/la_energy_notien/158