Firing U.S. Attorneys

Michael links to Ada, Cohen's complaint about the firing of seven U.S. Attorneys.  For what it's worth, the complaint strikes me as misplaced.  These U.S. Attorneys were nominated by this President, and serve in the Executive Branch of his administration.  President Clinton, remember, fired every single GOP-appointed U.S. Attorney -- except one -- when he came into office and, quite understandably, replaced them with his own nominees.  Is there politics at work here?  Of course.  And?