A U.S. congressional commission said on Wednesday that China appears to have relaxed enforcement of sanctions on North Korea and called on the Treasury Department to provide a report on Chinese compliance within 180 days.

In its annual report, the U.S.-China Economic and Security Review Commission said the Treasury report should include a classified list of Chinese financial institutions, businesses, and officials involved in trading with North Korea that could be subject to future sanctions.

The bipartisan commission said China had appeared to enforce sanctions on North Korea more thoroughly than in the past in 2017 and in early 2018.