U.S. President Donald Trump's most sweeping round of tariffs took effect early Wednesday, with his top trade officials planning first to launch negotiations with Japan and several other allies.Under the newly imposed scheme, major U.S. trading partners, especially those in Asia, face much higher tariff rates, with goods from China hit by 84 percent, Cambodia 49 percent, Vietnam 46 percent, Thailand 36 percent and Japan 24 percent.The tariffs targeting almost all countries and regions worldwide, announced by Trump last week, have rattled financial markets and raised fears that they could upe…READ FULL ARTICLE