March 24: USA reinforces border with Mexico

http://news.bbc.co.uk/hi/spanish/international/newsid_7961000/7961630.stm

March 24: USA mobilizes very ample resources to the border with Mexico

http://www.impre.com/laopinion/noticias/estados-unidos/2009/3/24/eeuu-moviliza-amplios-recursos-115945-1.html