COPENHAGEN, Denmark (AP) — A majority of European Union members are calling for more agreements with countries where migrants depart from or travel through to get to Europe, saying the bloc needs to think outside the box to tackle irregular migration into the 27-member bloc.

The call by the 15 member countries came in a letter released Thursday, a day after the EU passed a measure to update to its aging asylum laws but which won’t enter force for two years and which only will work if all member nations put all of its provisions into action.

The letter, addressed to the high-ranking officials in the EU’s executive Commission, indicated that officials in signatory countries believe further solutions are needed, saying that the migration situation “will require all of us to think outside the box and jointly find new ways to address this issue at EU level.”