Senator Russ Feingold is criticizing President Bush for installing John Bolton as ambassador to the United Nations.
Feingold, a Wisconsin Democrat who serves on the Senate Judiciary Committee, had opposed the nomination during hearings back in April.
Bush sidestepped Democratic opposition Monday by nominating Bolton with a recess appointment, an avenue available when Congress is in recess.
It puts him in the post until a new Congress takes office 18 months from now.
Feingold says Bolton is fundamentally unsuited for the job.