From 2005 through 2014, Mexico’s per-capita real GDP increased from $8,966 to $9,938 as measured in 2010 U.S. dollars, yet despite this increase in the standard of living, environmental issues such as air and water pollution continue to be major concerns for the country. In 2012, the U.S. Environmental Protection Agency, with support from the Mexican government, implemented its Border 2020 program in a continued effort to address environmental and public health issues in the U.S.- Mexico border region. You can find information aboutthis program at: http://www2.epa.gov/border2020. Among the goals of the program are to reduce air pollution and improve access to clean and safe water on both sides of the U.S.-Mexico border. Explain how the attainment of the goals of the Border 2020 program could align with the inverted-U relationship described by Gene Grossman and Alan Krueger.