Obama Calls for Blagojevich to Resign

This seems weak. 

President-elect Barack Obama is calling for the Illinois governor to resign.

Obama spokesman Robert Gibbs says the president-elect agrees with other prominent politicians in Illinois and elsewhere that “under the current circumstances, it is difficult for the governor to effectively do his job and serve the people of Illinois.”

He should resign because he can’t effectively do his job?  How about he should resign because he’s allegedly a complete crook?