Franken is seen as a mean-spirited, nasty guy—a smart ass.
also smartass, 1960 (adj.), 1962 (n.), from smart (adj.) + ass (n.2).
: I asked you to come here to give us advice, not smart-aleck talk
[perhaps fr Aleck Hoag, a thief whose fate was described in an 1844 book by George Wilkes]