U.S. President Donald Trump signed a memorandum on Thursday that would introduce reciprocal tariffs. White House officials said the tariffs would not take effect on Thursday, but could begin to be implemented within weeks. Trump's nominee for commerce secretary said the administration would go country-by-country and that the policy study was expected to be completed by April 1. White House officials said the U.S. would produce a report within 180 days detailing the proposed country-specific measures, not ruling out the possibility of global harmonized tariffs. Trump said that the practice of shipping goods through other countries to avoid tariffs will not be accepted; countries that use the value-added tax system will be considered as tariff targets; tariffs in many countries are expected to remain unchanged; do not expect any exemptions; tariffs on automobiles, steel, aluminum and pharmaceuticals will soon be imposed, and auto tariffs may be implemented at the same time as tariffs on other industries; short-term prices may rise.