On the eve of the European Union summit in Seville in June, Human Rights Watch released a detailed letter to EU heads of state regarding the agenda for the summit. We expressed serious concerns about the continuing absence of adequate rights protections for migrants in the EU's growing arsenal of immigration policy proposals, including on immigration detention, trafficking in human beings, expulsions and returns, the treatment of unaccompanied migrant children, and the erosion of international protection standards for asylum seekers and refugees.