The GOVT would send you a check for the cost of the sales tax on essential items!
You're promoting an idea that you can't even come up with an efficient system for in your tiny little head!
You think that every person in America is going to save all their grocery receipts to prove how much food they bought? I sure as hell don't!
And what if the government sends everyone a fixed amount? Well, to quote you, how is that fair? A fatass like yourself eats 10x as much as a regular person, even if it's all in vegetables and low-fat lentils. I'd be getting reimbursed too much and you'd be getting reimbursed too little.
You might as well just convert the IRS into the Ingestibles Refund Service rather than get rid of it, because that's how much bureaucracy a system like that would need.