so-called International Migration Law is
not an independent body of law but is based upon drawing
together the implications of states existing obligation within
other areas of public international law such as international
human rights law, WTO law, and international maritime
law. Similarly, a range of international organisations have
mandates that touch upon international migration, which
is illustrated by the participation of 18 organisations within
the UN’s main migration coordination structure, the Global
Migration Group (GMG).