Who is Pak's Masood Khan and why Biden admin has 'blocked' his appointment

Pakistan has been embarrassed once again as State Department pauses the appointment of its new Ambassador to Washington. Imran Khan picked Sardar Masood Khan as the new U.S envoy but due to his links to terror groups, his appointment has not been cleared by the US so far. Masood Khan is the former president of Pakistan-Occupied Kashmir and has served in Ministry of Foreign Affairs of Pakistan since 1980s. Watch this video for his full profile.