G-20 advances on digital tax after US drops key obstacle A global digital tax would target US internet giants such as Amazon, Facebook and Google AFP February 27, 2021 MILAN: The G-20 looked closer to an agreement on Friday on a global digital tax after a change of heart from the United States removed a key stumbling block in the discussions. Under the previous President Donald Trump, the US had insisted on a so-called safe harbour clause that would have effectively allowed big tech companies to comply voluntarily with a digital tax, blocking progress on a deal. But in a videoconference with G-20 colleagues, new US Treasury Secretary Janet Yellen said her country "will engage robustly" in the talks and "is no longer advocating for 'safe harbour'...," a Treasury official told AFP.