特朗普称或该借北约第五条“考验”北约保护美边境，网友质疑

Core Viewpoint - President Trump suggested testing NATO by invoking Article 5 to compel NATO members to protect the U.S. southern border from illegal immigration, which has sparked controversy and criticism online [1][3]. Group 1: Article 5 and NATO - Article 5 of the North Atlantic Treaty is a collective defense clause that states an armed attack against one or more NATO members is considered an attack against all [3]. - The only previous invocation of Article 5 occurred after the 9/11 attacks, leading to collective support for the U.S. in the Afghanistan war [3]. Group 2: Public Reaction - Many social media users questioned the applicability of Article 5 to immigration issues, arguing it is meant for armed attacks rather than immigration concerns [3]. - Critics pointed out the inconsistency in asking NATO to secure the U.S. border while claiming to have already ensured border security [3].