We immigrants can sometimes sound a little hysterical about this because we come from places that have tried this and we know where it leads. Anybody who's lived in countries with socialized health care knows that it becomes the dominant political issue.

Summary

The quote suggests that immigrants might express a sense of urgency and concern about the implementation of socialized healthcare systems because they have firsthand experience living in countries where this has been attempted. Having witnessed the consequences, immigrants are afraid that once implemented, socialized healthcare can dominate the political landscape, overshadowing other important issues. The implication is that those who have lived in such countries have experienced the potentially negative effects and perceive it as a crucial matter to be cautious about.

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