TIME : BENEDICT ARNOLD TRAITOR (Definition of TREASON) This article from 2018 concerns President Donald Trump and Treason. Excerpt: Not that the definition of treason is complicated. To the frustration of the President's critics, Article III, section 3 of the U.S. Constitution narrowly defines treason against the United States as consisting 'only in levying war against them, or in adhering to their enemies, giving them aid or comfort." Americans shared this understanding of treason, rooted in English Common Law, even before the Constitution was written.