反制！一国对美国公民停发签证

Core Viewpoint - Niger has implemented a reciprocal measure by permanently halting the issuance of visas to all U.S. citizens and indefinitely banning their entry, in response to the U.S. expanding its entry restrictions on Nigerien citizens [1][3]. Group 1: Diplomatic Relations - The decision by the Nigerien government reflects a diplomatic policy aimed at maintaining sovereignty and is based on the principle of reciprocity [3]. - This action follows the announcement by U.S. President Trump, which increased the number of countries under full and partial entry restrictions from 19 to 40, affecting Nigerien citizens [3].