Brussels, 31/07/2015 (Agence Europe) - According to a new Eurobarometer survey published by the European Commission on 31 July, immigration is now the greatest challenge facing the EU. According to the Spring 2015 Eurobarometer, which was carried out in May of this year, 38% of respondents believe that immigration is the main challenge to be tackled, compared to 27% of respondents who cited the economic situation, 24% unemployment and 23% the public finances of the member states. It was in...