This study examines the political dynamics that shape legislators' policy positions on importing US meat into Taiwan during the past decade, focusing on the cases of US beef in 2012 and US pork in 2021. The trade policy surrounding this issue has become politically contentious, involving conflicting national interests and constituency preferences. Legislators face a dilemma, torn between prioritizing the interests of their constituents and aligning with their party's interests. The central argument posits that legislators affiliated with the ruling party are more inclined to advocate for or adjust their stances to support the removal of import bans on American meat, while those associated with the opposition party tend to exhibit a greater reluctance to endorse such a stance. Factors such as the legislators' constituent's interests, district vs party-list affiliations, the urban–rural divide, or education level do not consistently explain legislators' positions on the US meat trade policy. To examine these arguments, this study employs a mixed-method approach, incorporating quantitative analysis and two case studies of individual legislators. The findings of this study offer empirical support for the central proposition.