The US president is reportedly not interested in informal diplomatic contact with China on trade

US President Donald Trump has stifled almost every channel of diplomatic outreach with China, aiming to deal directly with his Chinese counterpart Xi Jinping, as the trade war between the two superpowers escalates, Politico has reported citing anonymous sources.

The increasing tit-for-tat duties between the US and China is part of a broader US tariff campaign against more than 90 countries, said to be aimed at addressing unfair trade imbalances. While Trump has paused the hikes for most countries for 90 days, Beijing was excluded and faces a 145% tariff. China has retaliated with 125% tariffs on US goods and restricted certain key exports.

The US president is adamant about direct negotiations with Xi, and has stifled other diplomatic avenues, Politico wrote on Saturday, citing anonymous former US State Department officials and an industry official.

Trump has not authorized White House delegates to engage with Beijing, the outlet cited its sources as saying. In addition, the Senate has not confirmed a US ambassador to China, Trump has not nominated an official to lead a diplomatic effort, and Washington has thus far not reached out to the Chinese embassy, Politico reported.

"The backchannels don't work because President Trump doesn't want them to," Ryan Hass, former director for China, Taiwan, and Mongolia at the National Security Council during the Obama administration, told the outlet.

"Trump wants to deal directly with President Xi in the same way he has with [Russian President Vladimir] Putin," he said.

Washington is waiting for Beijing to reach out and call first, CNN wrote earlier this month, citing anonymous officials.

"China wants to make a deal. They just don't know how quite to go about it," Trump has said. "They're proud people."

Additionally, Washington intends to use negotiations over potential tariff exemptions to pressure US trading partners to curb their ties with China and ramp up pressure on Beijing, the Wall Street Journal reported last week, citing unnamed sources.

In a statement on Monday, the Chinese Commerce Ministry stressed that it would retaliate against any country that takes such a deal "at the expense of China's interests."