(Reuters) -Donald Trump has been elected U.S. president, capping a remarkable comeback four years after he was voted out of the White House.Here is what companies in Asia have invested in the United States, what Trump has said about them and what potential U.S. business policy changes would mean for Asian companies.SEMICONDUCTORSAsian chipmakers, led by Taiwan's TSMC and South Korea's Samsung Electronics (KS:005930), have announced plans to invest at least $117 billion in the U.S. in total, encouraged by the current U.S. administration's key initiative aimed at lowering its reliance on Asia for high-end chips.In return, they have received or been pledged grants and financial support amounting to at least $18.85 billion, according to Reuters' calculation.It's unclear if Trump would roll back the scheme, which he called "bad." He made comments on the campaign trail that Chinese-claimed Taiwan should pay to be protected and also accused the island of stealing business from American semiconductor companies.Taiwan's GlobalWafers said on Thursday it expects the subsidy programme to continue in a Trump administration.ELECTRIC VEHICLESTrump has floated the idea of a 10% or more tariff on all goods imported into the U.S., a move he says would eliminate the trade deficit.He has also threatened a 200% tariff on some imported cars, and is particularly determined to keep cars from Mexico from coming into the country. The tariff would hit multiple Asian automakers including Honda (NYSE:HMC) Motor, Nissan (OTC:NSANY) Motor and Kia Corp.Honda chief operating officer Shinji Aoyama warned on Wednesday that tariffs on vehicles imported from Mexico would have a huge impact as the company sends 80% of its production there to the U.S. market.investing.com