“If you are born in the U.S. then you are a U.S. citizen. You were not born in the U.S. so you are not a U.S. citizen.” (Points : 1)

Slippery Slope
Denying the antecedent
Post Hoc
False Dichotomy
No Fallacy

http://writingcenter.unc.edu/handouts/fallacies/

And you think it's ... ?

The fallacy in the statement "If you are born in the U.S. then you are a U.S. citizen. You were not born in the U.S. so you are not a U.S. citizen" is actually denying the antecedent.

Denying the antecedent is a logical fallacy that occurs when someone assumes that if the antecedent (first part of the conditional statement) is false, then the consequent (second part of the conditional statement) must also be false. In this case, the speaker is assuming that if you were not born in the U.S., then you cannot be a U.S. citizen. However, this is not necessarily true.

The statement "If you are born in the U.S. then you are a U.S. citizen" is a conditional statement, also known as an "if-then" statement. It is stating that if a person is born in the U.S., then they are a U.S. citizen. However, the statement does not cover all possibilities for becoming a U.S. citizen. There are other ways to obtain citizenship, such as through naturalization or through parents who are U.S. citizens, regardless of place of birth.

Therefore, the fallacious reasoning in the statement lies in assuming that not being born in the U.S. automatically means you are not a U.S. citizen. This is denying the antecedent.