Chinese government interference in US politics, media and business has reached an "unacceptable level," a White House official said Wednesday.

Signalling that Washington's trade war with Beijing has spilled into an ever growing number of areas, the official, who asked not to be named, told journalists that China was deploying economic, military and informational tools to spread influence and to undermine the US government.

"The activities have reached an unacceptable level," he said.

The official said the policy of "actively interfering in our political system includes hurting farmers in districts and states that voted for the president."

He was referring to China's imposition of tariffs on soybeans — a hugely important trade in the electorally crucial state of Iowa — as retaliation for Trump's tariffs on Chinese goods.

In New York on Wednesday, Trump also spoke out, accusing China's government of paying for newspaper space in Iowa to push its message.

"They don't look like ads, they look like editorials and they're not — they're by China," Trump said. "They don't want me to get elected."

Trump tweeted earlier that these "propaganda ads" are being placed "because we are beating them on Trade, opening markets."

The White House official said that China's push for influence over the United States also targets "political candidates, depending on whether they criticize or support Chinese policies."

He said that Chinese media organizations were used as fronts, while "some of these activities are actually covert."

The Chinese government "employs cyber, it employs in some cases corruption and it employs propaganda," he said.

Vice President Mike Pence is due to make a speech on the growing controversy next week.

Trump says China wants to see him lose polls, triggering denial
United Nations, United States (AFP) Sept 26, 2018 –

US President Donald Trump accused China on Wednesday of working against his Republican Party in upcoming midterm elections, saying Beijing wants to see him suffer defeat because of his hard line on trade.

"Regrettably we found that China has been attempting to interfere in our upcoming 2018 election coming up in November against my administration," Trump told a meeting of the United Nations Security Council.

"They do not want me or us to win because I am the first president ever to challenge China on trade."

Chinese Foreign Minister Wang Yi rejected what he termed as "unwarranted accusations."

"China has all along followed the principle of non-interference," Wang said in the same session, which was chaired by the US president.

"We did not and will not interfere in any country's domestic affairs. We refuse to accept any unwarranted accusations against China."

Trump did not say how he believed China was interfering in the midterms, which could see the Republicans lose control of both the Senate and House of Representatives.

But his allegation comes as trade tensions soar between Beijing and Washington, which this week enacted new tariffs against China covering another $200 billion of its imports.

The United States also irked China earlier this week by going ahead with plans to sell a batch of military parts to the self-governing island of Taiwan.

Beijing sees Taiwan as part of its territory awaiting unification, and is deeply suspicious of the island's relations with the United States.

A special prosecutor, Robert Mueller, is investigating allegations that members of Trump's inner circle colluded with Russia to secure his victory in the 2016 presidential election after US security agencies determined that Moscow had sought to influence the outcome.