WASHINGTON — U.S. Trade Representative Jamieson Greer said Wednesday that a new U.S. global tariff will rise to 15 percent or higher from 10 percent for some countries, as President Donald Trump's administration is taking steps to replace its sweeping emergency tariffs struck down by the Supreme Court. Greer made the remarks during a Fox Business interview, Reuters reported, after the high court ruled Friday against Trump's use of the 1977 International Emergency Economic Powers Act to justify country-specific "reciprocal" tariffs and other duties. "Right now, we have the 10 percent tariff. It'll go up to 15 (percent) for some and then it may go higher for others, and I think it will be in line with the types of tariffs we've been seeing," Greer said. He did not mention any particular country that will face a higher tariff. On Tuesday, the Trump administration started imposing a temporary 10 percent global tariff under Section 122 of the 1974 Trade Act. Prior to its implementation, Trump threatened to raise it to 15 percent. Greer has also unveiled plans to conduct trade investigations