because this sentence is ungrammatical, just that

Here's how you break down the sentence: What hasn't he done? He hasn't made any evident attempt to... = [What he has not done] is [make any evident attempt to...] etc etc The focus of the sentence is now on Cain's actions, and not on the person himself.

make an attempt = attempt http://www.thefreedictionary.com/attempt

The sentence, as written, is correct and natural. Check my reply to Kim Chi and think about it. :)

Thank you for your answers. I have checked best answer thing, but now I am a little bit confused. I think I was supposed to wait for a while. Of course I appriciate kim chi. Anyway, is the sentence correct or not? Should I change [make] into [making] or leave it as an idiom? As Mr. Peachy says, the sentence came from article about Cain's. Just for curiosity, I want to know that the sentence is natural as artiicle for US or UK people.