American Airlines (AA, Dallas/Fort Worth) is mulling the use of Miami Int'l as potential hub for future routes to Africa, US Airways airline president, Scott Kirby, has said. Mr Kirby stated however, that once a proposed merger with US Airways (US, Phoenix Sky Harbor) goes through, the new mega-carrier's first priority will be Asia which he described as a market where his airline currently lags others. In a newsletter to his employees, Mr Kirby added that the carrier has "done some looking at points in Africa, (although) that is speculative and probably a little further down the road." Rival Delta Air Lines (DL, Atlanta Hartsfield Jackson) currently has the most extensive African network with flights to Johannesburg O.R. Tambo, Dakar Yoff-Léopold Sédar Senghor Int'l, Monrovia Roberts, Accra and Lagos while United Airlines (UA, Chicago O'Hare) plies a solitary Houston Intc'l to Lagos route. Analysts point to the difficulties US airlines face in dealing with West African airports and their handling companies along with the lack of safe, reliable accommodation for their staff, as being the major obstacles in establishing new routes to Africa.