I would not try to sway the sponsors/authors. Obviously they have too great a stake in passing the ban legislation.
I would try to sway the other members that vote. They may not have a strong opinion one way or the other.
I would make the case allowing for the status quo. And I would be sure to ask them why they feel a ban is a good idea, if they do. They should be specific, too. Standard nonsense replies should initiate another query from you as to why they think the ban is such a good idea.
jsc
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"As hard as I've tried, just can't NOT do this"
John Crickmer