Is this a problem big enough to be worth solving? There are places in the US where people live in no-income-tax states but shop across the border on no-sales-t

Is this a problem big enough to be worth solving? There are places in the US where people live in no-income-tax states but shop across the border on no-sales-tax states. This is obviously an abuse, but it's never been enough of a problem to really crack down on. If we can reduce our problems to known problems that aren't a big deal, that's good enough! Ship it!