The midwestern forests are not back, I grew up in Clayton County, Iowa and drive through the Midwest often. I have planted trees there in our family forest. Iowa has avery aggressive reforestation plan, free seedlings, minimal property taxes, and still people aren't planting many trees. Urbanization is still claiming more forests.
It's not a "reforestation plan". It's a "forestation" plan. Trees make good wind breaks which is good for soil conversation.
Most of the Great Plains had very little in the way of tress 150 years ago --- (ergo Sod Houses instead of Log Cabins.) There was nothing there to "deforest".