foreign mission(The Trump administration designated US branches of China's state media outlets as "foreign missions" and capped the number of Chinese journalists working for those outlets in the United States.cnn.comAlex_Odeychuk)
designate an organisation as undesirable(e.g. The law allows the authorities to prosecute foreign non-governmental organisations (NGOs) or firms designated as "undesirable" on national security grounds. (BBC) 'More)