At a garment factory in Ho Chi Minh City that exports T-shirts and underwear to the United States, staff are alarmed by "shocking" trade tariffs imposed on Vietnam that could severely impact their business. A manufacturing powerhouse that counted the United States as its biggest market last year, the Southeast Asian nation was hammered with a thumping 46 percent tariff in President Donald Trump's global trade blitz. IMAGES AND SOUNDBITES +ALSO SEE VIDI38WX49D_EN+