This national qualitative study investigates academic librarians' instructional experiences, views, and challenges regarding the widespread problem of misinformation. Findings from phenomenological interviews reveal a tension between librarians' professional, moral, and civic obligations to address misinformation and the actual material conditions of information literacy instruction, which influence and often constrain librarians' pedagogical and institutional roles. The authors call for greater professional reflection on current information literacy models that focus on achieving ambitious educational goals, but which may be unsuitable for addressing the larger social and political crisis of misinformation.