WASHINGTON — In Rochester, N.Y. a maker of furnaces for semiconductor and solar companies is moving its research and development to China to dodge President Donald Trump’s import taxes — a move that threatens a handful of its 26 U.S. jobs. In California’s San Joaquin Valley, the CEO of a company that makes precision parts for the biomedical and chip making fields jokes bitterly that he’s running “a nonprofit” and might have to cut jobs. And west of Detroit, a metal stamping company that supplies the auto industry is losing business to foreign rivals because Trump’s steel tariffs have raised metals prices in the United States. Trump frequently boasts that the taxes he’s imposed on imports — steel and aluminum and nearly half of all goods from China — have showered the U.S.