The problem isn't so much that they propose a serialization of ammution...it's who will be affected by it. I guarrantee you that law enforcement and military will get regular production ammunition, while civilians have to buy ammo from a separate assembly line or plant, paying all of the overhead costs for the new lines.
There's no way to fight crime and terrorism with the inherent costs of serialization, both in the machinery and in the lower production rates. Even Obama knows (or will find out from an advisor) that this technology would criple our military and law enforcement production. Therefore, there will be two assembly lines for the same product.
I would honestly like nothing more than for the ammunition and firearms companies to protest this legislation and any other unconstitutional legislation in the same way Ronnie Barrett protested the CA .50 ban-- cut off the government from the product until they restore the rights of the people.
I don't really know how I feel about cutting off production for the military, since they're pretty busy fighting a war. But the police departments that are going to run out of ammo should barrow ammo from other police departments that don't need it as badly, while demanding the right of the people to own guns and ammo be restored.