Working on a research project entitled 'Public opinion, mobilizations and policies concerning asylum seekers and refugees in anti-immigrant times' (Europe and Belgium), funded by the Belgian Federal Science Policy Office (Belspo) as part of its BRAIN-be research, a team of researchers from ULB, ULiège and KU Leuven have studied people's attitudes, discourses and mobilisation towards refugees in six European countries (Belgium, Germany, Sweden, Italy, Greece and Hungary) from 2017 to 2019.

The survey entitled Transatlantic Trends: Immigration was conducted by the German Marshall Fund of the United States. It is a comparative survey involving 5 EU countries (Italy, Spain, France, Germany and the UK) and the United States on immigration and integration topics.