Trump's sweeping new tariffs in effect, including 104% on China

President Trump's tariffs on imports from dozens of countries came into force Wednesday, including 104% on goods from China, dramatically ramping up a potential global trade war. The tariffs took hold at 12:01 a.m. EDT.

Following the imposition of sweeping 10 percent tariffs have rocked the global economy since taking hold over the weekend, rates on imports to the United States from exporters like the European Union or Japan rose further at 12.01 am (0401 GMT) Wednesday.

China -- Washington's top economic rival but also a major trading partner -- is the hardest hit.