[A migrant woman crosses from Serbia to Hungary in Horgos, Serbia, Friday, Sept. 30, 2016. Hungarians will vote Sunday in a referendum which Prime Minister Viktor Orban hopes will give his government the popular support it seeks to oppose any future plans by the European Union to resettle asylum seekers among its member states.(AP Photo/Vadim Ghirda)]BUDAPEST, Hungary (AP) — Hungary is holding a referendum on Sunday against future European Union quotas for accepting asylum seekers, but schemes already in place to ensure EU member countries are taking in a fair share of the migrants reaching Europe hardly are working now.