Sri Lanka, March 11 -- A bipartisan group of US legislators is pushing the State Department to escalate its travel advisory to Xinjiang to the highest risk level due to "ongoing crimes against humanity and genocide" and the Chinese government's promotion of tourism in the region.

In a letter to US Secretary of State Antony Blinken released on Thursday, the co-chairs of the Congressional-Executive Commission on China (CECC) said that "American citizens and permanent residents, companies, and other entities should be warned about the risk of enabling atrocity crimes if they participate in tourism to the XUAR", referring to the Xinjiang Uygur autonomous region.

The commission's leaders - Representative Chris Smith, Republican of New Jersey...