But your question is what these thresholds are. They vary across provinces.
I love your idea that federal members would sit down with your provincial colleagues to start to talk about how to repair this mess. While the levels vary by province, nutritionists do these calculations and look at the cost of a nutritious food basket locally and contrast that to the welfare rates and ask whether people can afford to buy that basket. What we see is that it doesn't matter whether that nutritionist is sitting in Alberta, or whether she's sitting in Peterborough, or whether she's in St. John's. The answer is the same: no, they can't. And they're out by hundreds of dollars.
So while the numbers vary, so do the costs of living in these jurisdictions.