Escobar quickly became known internationally as his drug network gained notoriety; the Medellín Cartel controlled a large portion of the drugs that entered the United States (including Puerto Rico), Mexico, the Dominican Republic, Venezuela, and Spain. The production process was also altered, with coca from Bolivia and Peru replacing the coca from Colombia, which was beginning to be seen as substandard quality than the coca from the neighboring countries. As demand for more and better cocaine increased, Escobar began working with Roberto Suárez Goméz, helping to further the product to other countries in the Americas and Europe, as well as being rumored to reach as far as Asia.