The statistics may be provocative. I wish Mr. Fisch provided an analysis. Without some context, the statistics could border on fear-mongering---depending on his audience.

Here's what occurred to me:

• The US is a nation of immigrants (with respect to our ealiest immigrants who were here 12-19000 years ago).
• 1/3 of the continental US was part of Mexico as recently as 1845.
• One of the problems with the US' population growth is really the problem high energy consumption. As of 1998, the US produced 18% of global oil---a limited resource, yet consumed 40% of global oil.(http://energy.cr.usgs.gov/energy/stats_ctry/Stat1.html).
• With a growing population, the US will have to committ to the folllowing:
  • reduction in energy consumption
  • equitable access to sustainable energy, food, homes, healthcare, transportation, education, employment, etc.
  • More information can be found at http://www.footprintnetwork.org/gfn_sub.php?content=global_footprint