Where does the legislation say that? All I can see is:
SYNOPSIS AS INTRODUCED: New Act Creates the Assault Weapons Ban Act of 2007. Contains only a short title provision. LRB095 04801 RLC 24861 b A BILL FOR SB0016 LRB095 04801 RLC 24861 b 1 AN ACT concerning criminal law. 2 Be it enacted by the People of the State of Illinois, 3 represented in the General Assembly: 4 Section 1. Short title. This Act may be cited as the 5 Assault Weapons Ban Act of 2007.
What you're looking at is the "short title". The full bill is at the link.