This is the best summary I could come up with:

Congress in recent years has passed laws to pressure China over what the State Department says is an ongoing genocide of Uyghurs and other largely Muslim minority groups from Xinjiang.

The U.S. has sanctioned a handful of Chinese officials and entities linked to Xinjiang under various channels, including the Global Magnitsky Act and by executive order, actions that activists say are inadequate to the scale of atrocities committed.

The letter, dated Sept. 19, asked Blinken and Mayorkas to explain why certain Chinese officials, including Xinjiang Communist Party secretary Ma Xingrui, had not been sanctioned given their role in formulating and executing China's crackdown.

It also asked the Department of Homeland Security (DHS) to explain why dozens of Xinjiang-linked companies had not been added to an entity list under the Uyghur Forced Labor Prevention Act that would bar their imports.

The State Department has long been mulling sanctions under UHRPA, but Reuters reported in May that related measures were among policies delayed in the wake of a diplomatic crisis spurred by the U.S. downing of a suspected Chinese spy balloon that flew over U.S. soil earlier this year.

Chinese leader Xi Jinping visited Xinjiang in August and said maintaining social stability was a top priority, comments activists viewed as him doubling down on his approach.

The original article contains 501 words, the summary contains 214 words. Saved 57%. I'm a bot and I'm open source!

Don't expect the US to get back with an answer any time soon, they bury their head in the sand hoping people will just forget with enough time

The reason is right there in the article:

which requires the U.S. president, absent a waiver, to identify and sanction Chinese officials responsible for abuses.

Problem is, they can't identify these officials (or the abuses) because of lack of evidence (or even proper investigation). As evidence of this lack of evidence, can anybody name any official known to take part in any of the vague accusations?

Even the abuses listed in the article are just "forced labor and labor transfers" and that'd be really funny of the US to use as a charge against any other country given their 13th amendment private prisons.