The United States is deeply concerned about actions taken by the International Civil Aviation Organization (ICAO) to suppress freedom of expression and curtail important discussion of Taiwan’s legitimate role in international issues. Blocking Twitter users who make reference to Taiwan’s participation in international organizations, particularly given the global response to the coronavirus crisis, is outrageous, unacceptable, and not befitting of a UN organization. Taiwan has a relevant and credible voice on transnational health issues, and the United States has long supported its active engagement in international venues, including ICAO, where its expertise can be beneficial. We call upon ICAO to immediately and permanently reverse its practice of blocking discussion of Taiwan on its Twitter properties and make clear publicly its understanding that freedom of expression must always supersede the political insecurities of member states.