Who or whom is right?

From:  "Macy"

I am in an argument with my boss about the usage of who/whom in the following sentence and would like to know which of us is right.

He is requesting support from her for the raising since birth of the child whom/who he has raised since birth.

So is who or whom correct?

TB started off with this: 

Look under USAGE NOTE: click here

amr shalakanidr simply answered with this: 

i vote for "whom"

jcummins added this: 

if the statement was turned into a question you would ask, "Who has he raised since birth? He has raised johnny or susy or whoever it was. You use "whom" after a verb that is doing an action to or for another person. For example, "To whom are you writing?" "For whom are you cooking dinner?"

Spaznaaron muttered this: 

Whom, or to whom understood you is a noun. There for who is the the correct answer.

J-Cizzle reported this: 

The answer is whom. Whom is always used when a person is the direct object of a verb. In other words, If a verb is doing something to a person. the person is referred to as whom. In your case, the child is the direct object of the verb "raise" so it should be whom.

Doran helped out with this: 

'Who' is used as the subject of a sentence while 'Whom' is used as an object. "He is requesting support from her for the raising since birth of the child whom/who he has raised since birth" is in my opinion, a poorly written sentence. To answer the question, my answer would be 'whom' because "he (subject) has raised [the baby] (object)"

Todd shared his beliefs: 

Well who is a nominative pronoun (which means it acts as a subject). Whom on the other hand is a objective pronoun (meaning it serves as an object). An easy way to get it right would be to try using him/her in the place of who/whom. If it sounds right it would whom. For example, I talked to whom, you can replace whom with him, I talked to him.
But neither who nor whom is needed in this sentence. It would be better written "He is requesting support from her for the raising since the birth of the child he has raised."

Mr Obvious finished with this: 

In response to the who/whom controversy: The correct usage would be the objectie pronoun "whom" because of the usage of the noun "child" as an objective noun.