US says: FATA no longer under the sovereign control of the Pakistani state

That is not true. There is a railway line from Peshawar to Torkham ...and another from Kohat to Tal, Kuram agency both tribal areas.

FATA was the creation of British as a part of its Great Game and Cold War strategy. Later that status was retained by Pakistan because of reasons related to domestic power configuration and regional geo-strategic situation...Still Pakistan is reluctant to do any kind of reform in FATA despite persistent demand by people of FATA and NWFP. They say Pakistan's military elite think FATA is essential to Pakistan's security strategy as well as economic interests.

There are Mohmands in FATA on Pakistani side but here they are called tribals. Mohamands are on the Afghan side as well but there they are full citizens with all rights. Same is true of others like Shinwaris (on both sides), Mangals, Wazirs, etc.