So what does the Chinese side think of the U.S.'s proposed escalation?
Lighthizer added that "instead of changing its harmful behavior, China has illegally retaliated against United States workers, farmers, ranchers and businesses", in a direct reference to China's decision to apply retaliatory sanctions on USA products.
Erin Ennis, senior vice president of the US China Business Council, said a 10 per cent tariff on these products is already problematic, but more than doubling that to 25 per cent would be much worse. The Chinese have retaliated in kind.
The latest on the on-going trade war bewteen Washington and Beijing. the Trump administration says it's considering raising its proposed tariffs on 200 billion dollars of Chinese goods.to 25 percent.
There have been no formal talks between Washington and Beijing for weeks over Mr Trump's demands that China make fundamental changes to its policies on intellectual property protection, technology transfers and subsidies for high technology industries.
The source said the Trump administration could announce the tougher proposal as early as Wednesday.
"If the United States takes further measures that escalate the situation, China will definitely fight back", said Geng Shuang a foreign ministry spokesman.
Mr Trump's pressure strategy would not work if he did not resolve trade disputes with USA allies such as the European Union, Mexico and Canada, he said.
The public comment period on the US tariffs aimed at $US200 billion ends on August 30 after public hearings August 20-23, according to the US Trade Representative's office.
The tariffs would affect food, chemicals, steel and aluminum and consumer goods ranging from dog food, furniture and carpets to vehicle tires, bicycles, baseball gloves and beauty products. But she was slightly more guarded with her financial paper trail, tightly intertwined with Republican operative and reputed lover Paul Erickson, BuzzFeed News reported Tuesday evening. "Given the scope of the products covered, about half of all imports from China are facing tariffs, including consumer goods", Ennis said.
Earlier this year, the USA imposed 25 percent tariffs on $34 billion in Chinese goods.
Some US politicians expressed support for the White House move.