Immigration is the number one issue because it costs hundreds of millions of Euro to house, feed, clothe and transport these people (some of whom are complete fraudsters)
https://www.irishmirror.ie/news/irish-news/politics/cost-accommodating-asylum-seekers-increased-31485431.amp
https://www.irishmirror.ie/news/irish-news/politics/cost-accommodating-asylum-seekers-increased-31485431.amp