FLAW中对人不对事和循环论证~？

pennyconan

Alba: I don’t intend to vote for Senator Frank in the next election. She is not a strong supporter of the war against crime.

Tam: But Senator Frank sponsored the latest anticrime law passed by the Senate.

Alba: If Senator Frank sponsored it, it can’t be a very strong anticrime law.

Which of the following identifies the most serious logical flaw in Alba’s reasoning?

这道题答案是循环论证。。。
那么哪个NN可以举一个对人不对事FLAW的例子吗？