All three are members of President Donald Trump’s Republican Party.
“The U.S. actions seriously interfere in China’s internal affairs, seriously violate the basic norms of international relations and seriously damage Sino-U.S. relations,” Chinese Foreign Ministry spokeswoman Hua Chunying told reporters.
“China will make further responses based on how the situation develops.”
Hua did not elaborate.
U.N. experts and activists say at least a million ethnic Uighurs and other Muslims are held in detention centers in Xinjiang. China describes them as training centers helping to stamp out terrorism and extremism and give people new skills.
The Congressional-Executive Commission on China monitors human rights and the development of the rule of law and submits an annual report to Trump and Congress.
Washington’s measures against Chinese officials, including the Communist Party secretary of Xinjiang, involve freezing U.S. assets, U.S. travel bans and prohibiting Americans from doing business with them. (Reporting by Yew Lun Tian; Writing by Se Young Lee; Editing by Alex Richardson and Nick Macfie)