The dataset documents the ministerial structure of the immigration and integration field in 16 Western European countries (EU15 + Norway) from 1997 to 2017, including variables for country, year, descriptive account of structural change, title of ministry and miniter responsible for integration, title of ministry responsible for immigration, type of change, classification of coupled issues (7 categories), classification of integration as signaled/not signaled, and classification of integration as coupled/decoupled from immigration and/or justice. Additionally it includes data from the Parlgov database (Döring and Manow, 2016) on national elections, governments, and government parties and their party family affiliation.