electric fences. In 2019, a New York Times article reported that human rights groups and Uyghur activists said that the Chinese government was using technology from US companies and researchers to collect DNA from Uyghurs. They said China was building a comprehensive DNA database to be able to track down Uyghurs who were resisting the re-education campaign. Later that year, satellite photos confirmed the systematic destruction of Uyghur cemeteries. There have been few sustained protests from Islamic countries against the treatment of Uyghurs in China. In December 2018, the Organization of Islamic Cooperation (OIC) initially acknowledged the disturbing reports from the region but it later issued a report saying that the OIC "commends the efforts of the People's Republic of China in providing care to its Muslim citizens; and looks forward to further cooperation between the OIC and the People's Republic of China." Saudi Arabia, which hosts a significant number of ethnic Uyghurs, have refrained from any official criticism of the Chinese government, while Turkey's President Erdogan tacitly supported China saying that "It is a fact that the people of all ethnicities in Xinjiang are leading a happy life amid China's development and prosperity" while visiting China, after its Foreign Ministry denounced China for "violating the fundamental human rights of Uyghur Turks". In 2019, Indonesian scholar Said Aqil Siradj said the situation in Xinjiang was "really good" and suggested that the Indonesian government did not need to follow the Western countries in raising accusations of Uyghur persecution at international forums. Some observers have connected the lack of criticism from the Islamic world to Muslim countries' dependence on Chinese economic aid. In July 2019, 22 countries, including Australia, the United Kingdom, Canada, France, Germany and Japan, raised concerns about “large-scale places of detention, as well as widespread surveillance and restrictions, particularly targeting Uyghurs and other minorities in Xinjiang”. The 22 ambassadors urged China to end arbitrary detention and allow “freedom of movement of Uyghurs and other Muslim and minority communities in Xinjiang”. However, none of these countries were predominantly Islamic countries. In June 2020, former United States President Donald Trump signed the Uyghur Human Rights Policy Act, which authorizes the imposition of U.S. sanctions against Chinese government officials responsible for re-education camps. On 12 July 2019, ambassadors from 50 countries issued a joint letter to the President of the UN Human Rights Council and the UN High Commissioner for Human Rights