Borders and immigration are topics dominating world affairs during the 21st century including North America. This book examines the historical antecedents to the current crisis notably along the U.S.A./Mexico border under the Trump administration. Both the immigration and border issues transcend the current Administration with a history as long as that of America itself. Market demands often determined the influx of immigrants into the United States resulting in periods of anti-immigrant backlash based on race and ethnic factors. The geo-politics of market factors and immigrant backlash is rooted in both de jure and de facto politics. These factors are examined in detail with particular attention to the treatment of indigenous peoples of the Americas.