 Nyuma yiminsi 35, yashyigikiye amasezerano yo gutera inkunga inzego za leta mu gihe cyibyumweru bitatu, ariko aya masezerano ntabwo ateganya amafaranga na macye ku yo yari yasabye yo kubaka urukuta ku mupaka nigihugu cya Mexico byo gukumira abimukira. 