A Comparative Analysis of American and Vietnamese Presidents' Speeches: A Systemic Functional Grammar Perspective

This study presents a comparative analysis of the inaugural speeches of U.S. President Joe Biden and Vietnamese President To Lam, utilizing Michael Halliday's Systemic Functional Grammar (SFG) framework. By examining the Ideational (Transitivity), Interpersonal (Modality), and Textual (Texture and Cohesion) metafunctions, the study reveals how each leader's linguistic choices mirror the distinct political and cultural contexts of their respective nations. Joe Biden’s speech underscores the urgency of immediate action and crisis management, employing Material Processes to stress the importance of unity and national recovery. Conversely, To Lam's speech is rooted in long-term nation-building and the leadership of the Communist Party, with a focus on Relational Processes to reinforce collective responsibility and national unity. The Modality analysis demonstrates Joe Biden’s use of High Modality to convey decisiveness and transparency, aligning with American expectations for solid and clear commitments. In contrast, To Lam emphasizes collective duty and the Party's enduring leadership, reflecting Vietnam's socio-political ethos. Additionally, both speeches use Theme-Rheme structures and lexical repetition to ensure textual cohesion, though their cultural and ideological differences lead to distinct rhetorical approaches. By deepening our understanding of how political leaders use language to shape identities, communicate visions, and influence public perception, this study contributes to the broader field of political communication, offering insights into the strategic use of language across different cultural contexts.