The Trump administration has blacklisted a small Chinese bank accused of illicit dealings with North Korea, escalating pressure to get Beijing to rein in its wayward ally.

The Treasury Department says that the Bank of Dandong is a "primary money-laundering concern." It is proposing severing the bank from the U.S. financial system, pending a 60-day review period.

The announcement reflects growing U.S. frustration over China's efforts to enforce international sanctions intended to starve North Korea of revenue for its nuclear and missile programs.

Dandong is a northeastern Chinese city on the North Korean border and a gateway for trade with the isolated nation.

The U.S. also slapped sanctions Thursday on a Chinese shipping company and two Chinese people that it says have facilitated illegal activities by North Korea.