The veterinarian I worked for is a Christian and he and I both thought the same thing: "First, they'll mark the animals and then say, if you love your pet enough to microchip them, why wouldn't you do it for your child?"
I had a hunch that there would be a media frenzy over child abduction cases in order to facilitate the ease in which the microchipping process would be instituted over the general populace.
I'm willing to bet that we will see increased coverage on "alternative means to protect your child from abductions" on every major media station within the next two or three months, if not sooner.