Fishes of Minnesota - white sucker

This is all I know about white suckers, if anyone is interested. I know that a prey item should be less than 1/3 the length of the bass. Will I be able to get any bass over 20" in MN? Obviously adult sucker are way to big, this would give them the possablity to over populate and out compete Bgill that I want to catch. But if thier is a commercial bait market for them maybe they could be trapped out for profit?
Sorry its late, Im leaving before it gets any worse.