I think what Mr. Bagnell is trying to say is that the precursors or the methamphetamines fall under schedule 1, whereas ecstasy, LSD, and PCP fall under schedule 3. I believe Mr. Bagnell is saying that the bill limits the investigation, if you will, to item 18 only on schedule 1. That's what it says in the amendment.
On January 29th, 2008. See this statement in context.