I have figured out who the other traitor in the Corleone Family in part 2 was besides Fredo. It was Anthony!!!!!!!!!!!

1. Who's party was it, yes Anthony

2. Who had access to all the rooms without being questionedand was able to open the drapes(Anthony)

3. Whose picture/drawing made Mike happy thus causing him to look out the Window(Athony again)

4. Who let the hitmen into the party(Anthony invited his friends whose dad's were hitmen for Roth.)

5. After the shooting Michael talks to Anthony and tells him that he is leaving in the mourning, Anthony then asks if he can go with him and that he could help him(he is clearly trying to cover his true intentions)Also Anthony wants to go so he can talk to Roth.

6. Who happens to become buddies with Fredo(Athony again!!)

7. Who was Anthonies favorite baseball player yes u guessed it, ROTHSTEIN!!!!!!

Hahaha

Very ingeneous, Lost Don.
That little Anthony really fooled us, the
traitor! (At least we now know he was a true Corleone!)

Hmmmm you may have something there- I was always curious how Don Vito died while playing with Anthony in the garden

While we're at it, Anthony probably poisoned Michael's orange at the end of Part III when Michael died.

I'm sure Connie taught him the "poisoned foods" angle.

Really,I thought it was Mark McGuire
Haha youve solved all this boards problems