No, they didn’t. Some state department lawyers (so not the CIA, also obligatory FUCK the CIA) were unable to prove intent to eradicate the Uyghur people, but found plenty of evidence of mass imprisonment, torture, forced labor, and forced sterilization. Lemmy comments aren’t international court so I don’t have to prove intent to say that forced sterilization on any level is genocide, which it is according to the Genocide Convention.

~The cautious conclusions of State Department lawyers do not constitute a judgment that genocide did not occur in Xinjiang but reflects the difficulties of proving genocide […]~

~The Genocide Convention enumerates five categories of genocide, starting with the killing of members of a protected group but also including acts aimed at preventing a victim’s ability to bear children and forcibly separating children from their communities. Critics of the State Department’s legal stance have argued that it has focused too heavily on the first category, mass killing, and not enough on the other categories. In the case of China, these critics note, there is little evidence that it is engaging in mass killings of Uighurs and other minorities, many of whom have been subjected to indoctrination and pressed into forced labor. But evidence that it is carrying out other forms of genocide abounds, Beth Van Schaack, a visiting professor at Stanford Law School’s Center for Human Rights and International Justice, wrote in a recent post on Just Security.~

~“For example, the torture, rape and sexual violence committed against Uyghurs likely constitute genocide ‘by causing serious bodily and mental harm’—the second type of genocide recognized by the Convention,” she wrote. “Likewise, the deplorable living conditions of incarcerated Uyghurs may constitute genocide by ‘deliberately inflicting conditions of life calculated to bring about [their] physical destruction’—the third form of genocide.”~

~Source: https://foreignpolicy.com/2021/02/19/china-uighurs-genocide-us-pompeo-blinken/~

~Forced sterilization: https://www.bmj.com/content/375/bmj.n3124.full~

~China’s own documents provide evidence of forced sterilization (I should’ve led with this one, big ticket item here): https://jamestown.org/program/sterilizations-iuds-and-mandatory-birth-control-the-ccps-campaign-to-suppress-uyghur-birth-rates-in-xinjiang/~

Please see the below 2 comments for more discussion and better sources.