I apologize in advance for the cross posting.

This is my first LEED project as a LEED AP/Building Owner and I am running into an emerging war between the architect who is not LEED accredited and a general contractor-GC who is . The project is in Illinois and the GC is asserting that he can generate my construction documents for a renovation of a 2900 SF building. My question:

Who is normally responsible for the generation of the construction documents (GC, Architect or CXA)?