Without evidence of corruption or gross incompetence, the President should have the ability to appoint whoever they want for positions in their administration. The Senate may reserve the right to block a nominee, but most of them should go forward. This is why I think it was a mistake for Republicans to block IU law professor Dawn Johnsen. Her extremism may be repugnant, but she is cut from the same ideological cloth as Barack Obama and would only implement her employer's agenda.