"Regrettably, we found that China has been attempting to interfere in our upcoming 2018 election", Trump said, without offering any proof of his claim. "We refuse to accept any unwarranted accusations against China", he said.
Trump made the claim - without providing evidence or specifics - while chairing a session of the United Nations Security Council in NY.
"China placing ads in American newspapers, can the U.S.do the same in China?" one user asked. "And we're not going to let that happen, just as we're not going to let that happen with Russian Federation".
China later denied Trump's accusation. "However, these negative effects are more than compensated by gains in China's net export position: the United States imports fewer Chinese goods, but that is cushioned by trade diversion to third countries; where Chinese exporters gain market share at the expense of US exporters".
The president has withdrawn the U.S. from the 2015 nuclear accord with Iran, accusing the country of destabilizing actions throughout the region and support for terrorist groups like Hezbollah.
But they added they are concerned about activity from Russia, China, Iran and North Korea.
"You have statements made that they're going to hit our farmers, who are my voters", Trump said of the insert.More news: Prosecutor to Ford: I'm 'Very Sorry' You Feel 'Terrified'
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US intelligence officials have said they are not now seeing the intensity of Russian intervention registered in 2016 and are also concerned about activity by China, Iran and North Korea.
Trump's allegation of Chinese election meddling came as a surprise during a formal meeting around the Security Council's horseshoe table that was expected to concentrate on the spread of nuclear, chemical and biological weapons. Trump has boasted that the USA economy is performing at record levels while China's is struggling as evidence the United States is winning the dispute.
The Trump administration implemented another round of tariffs on $200 billion worth of Chinese imports on Monday, while Beijing implemented countermeasures on $60 billion worth of USA goods.
The latest round of tariffs targeting US and Chinese goods went into effect on Monday, raising the stakes in an escalating trade spat between the world's two largest economies. Trump tweeted last month that "all of the fools so focused" on meddling from Russian Federation should "start also looking in another direction, China". Only under the guise of foreign interference do the American people feel that they need someone like Trump.
"I can say definitively that it's a sufficient national security concern about Chinese meddling, Iranian meddling, and North Korean meddling that we're taking steps to try and prevent it", Bolton said on ABC's "This Week."
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 USA government.
Trump said the world has been "rightly focused on the dangers of nuclear weapons" but he urged leaders to "never forget the threats posed by biological and weapons".