The Livingston Group's clients have included Citigroup, the United States Chamber of Commerce, and Verizon Communications. Another important client was the Republic of Turkey, on whose behalf the Group lobbied until March 2008. Critics contend that this lobbying was a form of genocide denial, as Turkey does not recognize the slaughter of up to 1.5 million Armenians as a genocide, and does not want the American Government to recognize these events as genocide either.