Processing migrants on the Greece-Macedonia border
14 September 2015 Last updated at 12:04 BST
EU interior ministers are meeting in Brussels to talk about how to manage the flow of migrants arriving from Syria, Iraq and Afghanistan.
Some EU countries are tightening border controls including Germany, which has temporarily reintroduced checks at its border with Austria.
Lyse Doucet reports from the Greek border where migrants have been continuing to arrive hoping to cross into Macedonia.