U.S. President Donald Trump plans to sign legislation calling for sanctions on Chinese officials responsible for oppressing Uighur Muslims, a source familiar with the matter said on Monday without offering a time frame for the signing.

The bill, which passed the U.S. House of Representatives and the Senate with bipartisan support last month, calls for sanctions against those responsible for repression of Uighurs and other Muslim groups in China's Xinjiang province, where the United Nations estimates more than a million Muslims have been detained in camps.

The Chinese Embassy in Washington repeated a prior statement noting that the bill "blatantly smears China's counterterrorism and deradicalization measures and seriously interferes in China's internal affairs," which China "deplores and firmly opposes."