The May 2019 ban on Huawei was partial: it did not affect most non-American produced chips, and the Trump administration granted a series of extensions on the ban in any case, with another 90-day repreive issued in May 2020. In May 2020, the U.S. extended the ban to cover semiconductors customized for Huawei and made with U.S. technology. In August 2020, the U.S. again extended the ban to a blanket ban on all semiconductor sales to Huawei. The blanket ban took effect in September 2020.