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Ortega and Peri focus on the tightness of immigration reforms over time, and they provide quantitative measures of immigration policy restrictions (or tightness) along several dimensions’. By analyzing policy change, Ortega and Peri classify laws based on whether they tighten the requirements of entry or stay in the country, separating laws that concern asylum seekers from laws dealing with other types of immigrants’. The authors analyse policies linked to both ‘asylum’ and ‘non-asylum’.
While the authors main interest is on immigrants’ admission, they also include ‘stay’.
Ortega and Peri build three separate indices of ‘tightness’ of immigration law reforms. The first index
includes only those measures tightening or loosening the entry of non-asylum immigrants, while the second includes measures tightening or relaxing provisions concerning the entry and/or the stay of non-asylum immigrants. The third is an index that includes changes in immigration policy concerning the entry and/or the stay of asylum seekers only.
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