Why can't a U. S. citizen, who was originally a foreigner, run for president of the United States, even if he or she has obtained U. S. citizenship?

Why cant a U. S. citizen, who was originally a foreigner, run for president of the United States, even if he or she has obtained U. S. citizenship?
Why can't a U. S. citizen, who was originally a foreigner, run for president of the United States, even if he or she has obtained U. S. citizenship?
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