What I've picked up from 'rule-making' so far is that rules in general are OK for 80% of the users. It's the 20% that is the exception (to the rule) and that requires additional rulings. And then the problem starts: of this 20% again only 80% is fixed by the extra rule, so more rules are needed. Then the third rule to fix things actually allows some to profit extra, so... well, you get the idea. Wherever there are rules, some people suffer, and fixing it breaks things...
You're seeing pitfalls in rolling this out, that's great, we can fix those. But saying it shouldn't exist at all (like many commenters are in this thread) because of potential problems here and there is nothing but defeatism.
If you don't like it, attack it at the principal. If you do like it then let's make it happen. None of this in between bullshit.
It is not just money for formula. WIC has a potential to be so much more to new families. I know I sound hypocritical now but I'd like to think of it as being practical. Sorry, I'm not very articulate.