Chief Justice Scalia, for example:
http://boingboing.net/2013/03/13/tom-the-dancing-bug-judge-sca-2.html
One of the many disgusting things about the Irish “elite” is the way they like to borrow bits of jargon from America. Lucey probably has no real idea what “judicial conservatism” means in the US context, and probably couldn’t tell you what it might mean in the Irish context.