Some 750 experts in global public health, US constitutional law, and international law and relations have called for leaders in the US Senate and the House of Representatives to prevent the US president, Donald Trump, from withdrawing from the World Health Organization.1  On 9 July WHO’s director general, Tedros Adhanom Ghebreyesus, pleaded with the international community for unity against the covid-19 pandemic, amid a “lack of leadership and solidarity at the global level and national levels.” The pandemic was getting worse and cases had doubled in the past six weeks, he said, urging people to …