Depuis des dizaines d'années les autorités américaines et le Congrès tentent de trouver une solution viable pour freiner l'immigration illégale. Démocrates et républicains ne s'entendent pas sur le "succès" des dernières mesures. La frontière est longue et le contrôle inégal.
"The challenge has tied Congress in knots for decades, and as lawmakers in Washington pursue a sweeping overhaul of immigration, the country is once again debating what to do about border security.
A bipartisan group of senators has agreed in principle to lay out a path to American citizenship for an estimated 11 million immigrants in the United States illegally, but only after quantifiable progress is made on border security, raising thorny questions: What does a secure border mean exactly? How should it be measured? And what expectations are reasonable given the cost, the inherent challenges of the terrain and the flood of traffic crossing legally each year in the name of tourism and trade?
Some Republicans argue that the southern border remains dangerously porous and inadequately defended by the federal government. Obama administration officials, insisting there is no reason for delaying plans to move millions of people toward citizenship, counter that the border is already safer and more secure than ever. They say record increases in drug seizures, staffing and technology have greatly suppressed illegal traffic, driving down border apprehensions to around 365,000 in 2012, a decline of 78 percent since 2000.
Indeed, by every indicator, illegal migration into the United States has fallen tremendously — in part because of stricter immigration enforcement — and has held steady at lower levels for several years.
But all camps leave a lot out of the discussion. Visits to more than a half-dozen border locations over the past two years show that the levels of control vary significantly along the line in ways that Congress and the White House have yet to fully acknowledge.
http://www.nytimes.com/2013/03/03/world/americas/border-security-hard-to-achieve-and-harder-to-measure.html?nl=todaysheadlines&emc=edit_th_20130303&_r=0
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