Mexican border: 170 years of chimeras

Mexican border : Initially invisible, the wall became, in forty years, a political object in both parties.

The first wall erected on the border between the United States and Mexico was completed more than a century ago, in 1911. In fact, a simple fence, about thirty kilometers long, designed to prevent livestock Mexican to circulate north and spread a parasite. For several decades and since its course from the War of 1848, the US-Mexico border has not moved. An invisible line crossing rough terrain and winding along the Rio Grande. The crisis of 1929 and its mass unemployment excepted, which caused their share of expulsions of Mexican workers from certain industrial cities, American political power and public opinion have long been hardly concerned by this border, nor by immigrants from the south. Far from Donald Trump's anxiety-provoking rhetoric and his obsession with the construction of a nine-meter-high concrete or steel continuous wall, which now partially paralyzes US federal administrations.

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