I support H.R. 1796, the "National Park and Wilderness Waters Protection Act," because the greatest economic value of these lands and waters will come from them as they are: whole, healthy, and beautiful jewels of nature that attract people's presence as residents and tourists, and their global attention as readers, admirers, and audiences. The temporary gains that could be achieved--at public expense--by private interests by mining these lands and inevitably polluting these waters would pale in comparison to the long-term values and ongoing revenue generation of these lands and waters in pristine condition.
Henry, Devin. 2015. “McCollum Seeks Ban on New Mines in Much of Northeastern Minnesota.” MinnPost. April 14. https://www.minnpost.com/dc-dispatches/2015/04/mccollum-seeks-ban-new-mines-much-northeastern-minnesota.
McCollum, Betty. 2015. US Congress 2015 H.R. 1796: National Park and Wilderness Water Protection Act. http://mccollum.house.gov/press-release/rep-mccollum-introduces-national-park-and-wilderness-water-protection-act.
PopVox: read about the bill, and optionally weigh-in on it, at https://www.popvox.com/bills/us/114/hr1796