I agree that long-term migration have a positive effect on the economy. Short term migration, on the other hand, is a little bit more disputed since most migran

I agree that long-term migration have a positive effect on the economy. Short term migration, on the other hand, is a little bit more disputed since most migrant will send money back to their home country. But for the refugees, since the country where they arrive is often not chosen because of economic opportunities, but because of politic/proximity, and the fact that refugees migration is mostly short term, I think that refugee migration has a negative effect. (see for example the countries with a lot of refugees in the Middle-East, such as Lebanon or Jordan). I agree that the failing of the welfare state in Europe is caused by how it is built, but the refugee crisis might broke the system beyond repair.