From the Liberal Party booklet:
Introduce a new, universal child tax benefit worth $350 per child, per year, on top of all existing child benefits. This will provide direct financial assistance to Canadian families whether or not they pay any income taxes.
This, I think, is the bit Thomas Aquino is talking about when he says:
"There are a number of good things in the Dion plan, no question about it, but one of my major concerns . . . is that the idea of using environmental taxes to deal with social policy that is not related to the environment, in my view, is a bad idea..."
It's also the sliver of truth in the Tories claim that The Green Shift is a "tax grab/redistribution scheme" meant to fund Liberal election promises. Take this provision out and you kill their best argument; you also presumably can set the carbon tax rate lower, as you won't need the cash to cut everyone with a kid a $350 cheque.