Il liberal-protezionismo digitale statunitense fra difesa della leadership nel mercato tecnologico e sicurezza nazionale

US liberal digital protectionism between defense of technological market leadership and national security - In both the United States and European contexts, the digital agora discipline has been historically characterized by a long initial period characterized by tendentially liberal traits. However, the particularities of the IT environment have led over time to assess the need to modify this guideline and to more strictly regulate issues relating to provider responsibility and algorithmic activity. In addressing this problem, European and US action are divided. This occurs due to a different historical tradition that recognizes these contexts and geopolitical considerations. The present work aims to analyze the US experience in the field of digital ecosystem in order to evaluate in it the existence of a sort of ambivalence between liberalism and protectionism.