The U.S. is delaying aid to Somalia for fear that U.N. officials are illegally funneling the aid to the terrorist group al Shabbab. According to this New York Times article the U.S. is by far the biggest contributor of aid to Somalia, a country where thousands upon thousands are dying of malnutrition.
While the aid is not expected to be cut off permanently this delay situation is a catch-22. While cutting off aid is aimed at not helping al Shabbab it indirectly does help them. The more desperate the Somali population becomes the more susceptible it will be to control by terrorist organizations like al Shabbab. It's also important to note that one reason we went into Somalia in the early 90's was to secure food and aid distribution which was being controlled by warlords. I don't want to get ahead of myself or make absurd predictions, but it's starting to look more and more to me like the U.S. may engage in some sort of intervention in that country.