Sociologists would call this shift in focus an example of goal displacement. This happens when the original goals of an organization is being replaced with goals that are developed as time passes by. The new goals are much more related to the situation of the present times as compared to the original ones which were planned before everything started.
During the history of the presidency, most arguments over candidacy qualifications have revolved around the "native born" qualification, especially during the most recent election.
"Irredentism is any political or popular movement that seeks to claim/reclaim and occupy a land that the movement's members consider to be a "lost" territory from their nation's past. Wikipedia"
