“…Laws determine both the position of boundaries between groups and the extent to which boundaries between groups are porous. For example, law produces the boundaries of racial groups (Crenshaw, ; Golub, ; Gualtieri, ; Lopez, ; Sohoni, ), families (Rose, ; Witt, ), economic classes (Iceland, ), gender groups (Epstein, ; Korteweg, ), sexualities (Canaday, ; Rollins, ), and citizens and non‐citizens (Favell, ; Joppke, ; Schmidtke & Ozcurumez, ; Soysal, ). Law also determines the extent to which these boundaries can be crossed, for example through intermarriage, wage equality, or access to national group membership.…”