The document is a photo essay by Mike J Quinn that compares the US-Mexico border fence to the Iron Curtain that once divided Eastern and Western Europe. It notes some initial similarities between the two barriers but suggests there are also important differences, as the US now has modern equipment and better technology compared to when the Iron Curtain was built, though it could still learn lessons from its construction. It encourages the reader to join an online movement to be part of shaping America's history.