The U.S. Congress's latest allegation regarding China's tech firms makes it clear that doing business in America is not 100 percent about business, but has to battle with willful and malicious suspicion and deeply-rooted political prejudice.

The Congress said Huawei and ZTE are a threat to U.S. national security based on previous cyberattacks that came from China. The lengthy report, however, full of vacant and untenable accusations, could neither prove that Chinese companies are involved in espionage nor that their normal contact with the government has jeopardized the security of the U.S. information system.

Threatening national security is enough to get any foreign business out of the U.S., as it outweighs everything else, no matter how lucrative the business may be for the country.

But when such horrific and sensational charges become a convenient tool to block competitive foreign companies and gain political favor during the election season, it only serves to undermine the credibility of the U.S. Congress and downgrade the U.S. business environment for Chinese investors.

The U.S. Congress concluded its investigation and released its report at a critical time for Huawei, as the company is gearing up to expand its presence in the United States.

In anticipation and fear of Huawei's huge potential, as the company had run astonishingly successful in 140 countries in the world with their quality but inexpensive products, the congressmen, on behalf of the intertwined domestic interest groups, certainly know how disastrous the the report will mean for Huawei, the world's second largest telecom equipment maker whose overseas business generates 70 percent of its annual income.

It suggests the U.S. fear of made-in-China products has spread from labor-based consumer goods to technology-intensive equipment that could threaten the American core competence.

Chinese investors have been holding the notion that complying with business norms will be good enough to smooth their expansion in the United States. However, the Huawei case alerts them such a notion is their wishful thinking and naive illusion. Persistent political bias is the invisible hurdle they have to overcome.

The U.S. government has a tradition of giving the cold shoulder to Chinese investors, as a number of Chinese companies, state-owned and private, have been blocked from acquisition deals due to being painted as national security threats.

Such an indiscriminate labeling also reveals an absurd and bigoted belief that business heavyweights from China are nothing more than a frightening behemoth, as if the McCarthy-era Communist witch-hunting of the 1950s still prevails today.

Treating Chinese companies with strong prejudice based on a selected ideology looks outdated and awkward at a time when free trade and investment have brought unprecedented benefits to the world.

In marked contrast to Huawei's reception in the United States, the company received approval for a two-billion-U.S.-dollar investment and procurement plan in the United Kingdom last month.

Discarding bias in favor of pursuing a win-win situation is not impossible, but has already taken place.