What does 애매한 법규가 애매한 사람 잡는다 mean?

 ANSWER: Vague laws catch innocent people.

There are two 애매하다 words in my Korean-English dictionary. One is a Sino-Korean word meaning "vague," and the other is a pure-Korean word meaning "innocent." So, in the sentence 애매한 법규가 애매한 사람 잡는다, the first 애매한 means "vague," and the second means "innocent."

From Dong-A's Prime Korean-English Dictionary

From Dong-A's Prime Korean-English Dictionary