The whole story with the recognition of the Armenian Genocide started right after the world learned about the slaughter. Already in 1916 the governments of the USA and of some European countries called the Ottoman Turkey to account for the committed. The first American President, who officially recognized the Armenian Genocide, was Woodrow Wilson. Unfortunately that was all about it. All the other presidents of the United States avoid the word "genocide", although such a mass murder is indeed a massacre, especially being so carefully worked out.