WASHINGTON (Reuters) - The White House on Saturday sharply criticized China’s efforts to force foreign airlines to change how they refer to Taiwan, Hong Kong and Macau, labeling China’s latest effort to police language describing the politically sensitive territories as “Orwellian nonsense.”

Amid an escalating fight over China’s trade surplus with the United States, the White House said China’s Civil Aviation Administration sent a letter to 36 foreign air carriers, including a number of U.S. carriers, demanding changes.

The carriers were told to remove references on their websites or in other material that suggests Taiwan, Hong Kong and Macau are part of countries independent from China, U.S. and airline officials said.

The White House said in a statement that President Donald Trump “will stand up for Americans resisting efforts by the Chinese Communist Party to impose Chinese political correctness on American companies and citizens.”

“This is Orwellian nonsense and part of a growing trend by the Chinese Communist Party to impose its political views on American citizens and private companies. ... We call on China to stop threatening and coercing American carriers and citizens.”

Taiwan is China’s most sensitive territorial issue. Beijing considers the self-ruled, democratic island a wayward province. Hong Kong and Macau are former European colonies that are now part of China but run largely autonomously.

On Sunday, China’s foreign ministry responded to the White House comments, saying that overseas companies operating in China should respect its sovereignty and territorial integrity, follow Chinese law and “respect the national feelings of the Chinese people”.

“No matter what the United States says, it cannot change the objective fact that there is only one China in the world and that Hong Kong, Macau and Taiwan are indivisible parts of Chinese territory,” spokesman Geng Shuang said in a statement on the ministry website.

The White House’s sharp criticism follows contentious trade talks between senior U.S. and Chinese officials last week.

The Trump administration demanded a $200 billion cut in China’s trade surplus with the United States by 2020, sharply lower tariffs and a halt to subsidies for advanced technology, people familiar with the talks said.

“My group just got back from China. We’re going to have to rework China because that’s been a one-way street for decades,” Trump said at an event in Cleveland on Saturday.

FILE PHOTO: A U.S. flag is seen during a welcoming ceremony in Beijing, China, November 9, 2017. REUTERS/Thomas Peter

“We can’t go on that way,” he said, although he also said he has a lot respect for Chinese President Xi Jinping.

Trump earlier this week praised his relationship with Xi but there were no signs of significant progress at the talks on Thursday and Friday, raising fears of a trade war between the world’s two largest economies.

China’s top diplomat, Yang Jiechi, and U.S. Secretary of State Mike Pompeo on Saturday discussed bilateral ties by phone, with Yang saying relations were at “an important stage”, according to the Chinese foreign ministry.

It was unclear if the call came after, or was a response to, the White House statement - or if the two had even discussed the issue of how Taiwan, Hong Kong and Macau are referred to by U.S. companies.

According to a Chinese foreign ministry statement late on Saturday, Yang told Pompeo the two countries should strengthen exchanges, maintain close communication over economic and trade issues and respect each other’s “core interests and major concerns”.

China and the United States should “properly settle disputes and sensitive issues”, keep up communication and coordination on major international and regional issues and “push bilateral relations forward along the right track”, Yang said.

TARIFF THREATS

Trump has already proposed tariffs on $50 billion of Chinese goods which could go into effect next month.

China has said its own retaliatory tariffs on U.S. goods, including soybeans and aircraft, will go into effect if the U.S. duties are imposed.

It has also requested that Washington treat Chinese investment equally under national security reviews and stop issuing new restrictions on Chinese investment.

The dispute over how airlines refer to Hong Kong, Taiwan and Macau is another area of tension in U.S.-China relations.

A spokesman for Airlines for America, a trade group representing United Airlines UAL.N, American Airlines AAL.O and other major carriers, said on Saturday it was working with the U.S. government to determine "next steps" in the dispute.

In January, Delta Air Lines DAL.N, following a demand from China over listing Taiwan and Tibet as countries on its website, apologized for making "an inadvertent error with no business or political intention," and said it had taken steps to resolve the issue.

Also in January, China suspended Marriott International Inc’s MAR.O Chinese website for a week to punish the world’s biggest hotel chain for listing Tibet, Taiwan, Hong Kong and Macau as separate countries in a customer questionnaire.

The apparent intensification of efforts to police how foreign businesses refer to Chinese-claimed territories - even if only in pull-down web menus - underscores how sensitive the issue of sovereignty has become in China.

China’s aviation authority said in January it would require all foreign airlines operating routes to China to conduct comprehensive investigations of their websites, apps and customer-related information and “strictly comply with China’s laws and regulations to prevent a similar thing from happening.”

Australia’s Qantas Airways QAN.AX said in January it had amended its website to no longer refer to Taiwan and Hong Kong as countries rather than Chinese territories after China issued a similar warning.