This study investigates why long-lasting opposition developed against President Donald Trump's controversial Muslim ban, despite the information environment suggesting it should be ephemeral.

Context & Core Question: Examining how persistent anti-immigrant sentiment remained following widespread media coverage and counter-narratives about the policy.

The research explores whether public opinion on this divisive policy was subject to change over time or unexpectedly stable. Using original survey data, we track shifts in attitudes from before Trump's administration to its implementation periods. Our analysis reveals that opposition to the Muslim ban not only endured but paradoxically solidified despite significant information challenges.