Argumentation
Many times it becomes the vantage point of the debate because the values are, many times, the same in a round. Since each side has impacts that best pertain to their own value criterion, each side must try to convince the judge to weigh the round according to their value criterion.
Example: Resolved: In matters of U. S. immigration policy, restrictions on the rights of non-citizens are consistent with democratic ideals.""
Because "democratic ideals" is what is trying to be achieved in the resolution, most debaters would find it best and effective to use it as a value premise. Therefore, the debate turns to the value criterion. The affirmative, in this case, may use "preservation of procedure" which explains how their value premise is weighed. While the negative may opt to choose "preservation of autonomy". In both instances, both value criteria are attainable by both sides and therefore fair to weigh the round. it would be left up to the debate to determine which value criterion should be used to weigh the round.
Read more about this topic: Value Criterion