Walker exempted the firm from Wisconsin's environmental rules regarding wetlands and streams. Walker and the Trump administration rolled back air pollution limits in the area of the plant, overruling objections of Environmental Protection Agency staff. The plant was estimated to contribute significantly to air pollution in the region. Environmentalists criticized the decision to allow Foxconn to draw 7 million gallons of water per day from Lake Michigan. The roughly four square miles of land necessary for the Foxconn campus was in part made possible by forcing homeowners to sell at a fixed price under the threat of seizing the land under eminent domain.