You do have a point there, considering that the US is the most powerfull and influential state, i doubt the higher ups would even blink for Somaliland, laakinse the department has divisions and there is a Horn african one in which most devote most of their time in that respective region, Somaliland is viewed as extremely important in the geopolitical and political sense and the level of development of the state alone would equal it to having a strong standing towards anything that happens in the horn, considering its the only region in Somalia which you could say is problem free, recently had elections and democratic which Americans heavily admired.Do you think even the smallest desk officer of the lowest branch of any department in government is concerned with the primitive movements in a faraway poverty stricken desert land. The US hasn't even considered whether to "recognize" or not because you don't matter. U.S doesn't see Somalia's regions..what Somalia's regions are to us.
The main reason why recognition has not been applied yet is because the political implications and the different powers such as the Arab league and African Union which have strong standing in the issue and in keeping it non recognized and continue with their influence to shape the paradigm.
This is a huge step forwared, in my opinion Somaliland has been receiving a whole lot more attention lately, and i would not be suprised if the America shifts its interests there.
Finally when push comes to shove when there is a fully function government in Mogadishu, the reality will unfortunately have to be gobbled up by the Somali people and that is how it will take in the unfortunate reality of the desire to seccede. A referendum will be have to be considered.