WASHINGTON - The U.S. must fully implement sanctions on China for its Xinjiang policies, a U.S. congressional committee told the State Department, demanding reasons why Washington had yet to put restrictions on some officials linked to abuses in the Chinese region.

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.

But the House of Representatives select committee on China said in a letter that the Biden administration has not issued sanctions under one of those laws – the Uyghur Human Rights Policy Act (UHRPA) passed in 2020 – which requires the U.S. president, absent a waiver, to identify and sanction Chinese officials responsible for abuses.

Beijing denies any abuses in 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 United States must take action to hold PRC (People's Republic of China) perpetrators accountable and thus disincentivize further human rights abuses against the Uyghurs and other groups," Mike Gallagher, the committee's chair, said in a letter to Secretary of State Antony Blinken and Secretary of Homeland Security Alejandro Mayorkas.

Some Xinjiang experts say that alleged mass internment of Uyghurs peaked in 2018, but that abuses have continued with forced labor and labor transfers becoming more prominent.

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, bu...