This study aims to explore the extent of ideological bias in the discourse of elected U.S. President Donald Trump on social media platforms, specifically Twitter (now known as X), regarding his peace plan, commonly referred to as the “Deal of the Century.” The study employs Critical Discourse Analysis (CDA) to examine all of Trump’s tweets related to the Deal of the Century, seeking to answer the following research questions: How did Trump portray the parties affected by the deal in his tweets? What rhetorical strategies did he employ to present the deal? The analysis spans the period from the announcement of the economic component of the deal on June 22, 2019, to the unveiling of its political component on January 28, 2020. The study adopts Fairclough’s (1993) framework for CDA, focusing on lexical analysis to identify linguistic and semantic patterns. The findings reveal that Trump’s Twitter discourse during the specified period incorporated rhetorical substitution strategies that portrayed Palestinians negatively while highlighting Israelis and the U.S. administration as proactive agents of peace. The analysis further uncovers a clear ideological bias in the discourse, categorizing the involved parties into a polarized binary: either for peace or against it, without offering historical contexts to justify opposition or support for any party.