While the Justice and Home Affairs pillar extended cooperation in law enforcement, criminal justice, asylum, and immigration and judicial cooperation in civil matters, some of these areas had already been subject to intergovernmental cooperation under the Schengen Implementation Convention of 1990.
Sementara pilar Urusan Keadilan dan Dalam Negeri memperpanjang kerja sama dalam hal penegakan hukum, keadilan kriminal, perlindungan, dan imigrasi dan kerja sama yudisial pada masalah-masalah publik, sejumlah bidang tersebut telah dijadikan agenda kerja sama antarpemerintah di bawah Konvensi Implementasi Schengen 1990.