Former New York Mayor Michael Bloomberg (I) said Sunday that Republican strategist Karl Rove crossed a line with comments that Hillary ClintonHillary Diane Rodham ClintonIntel Dem decries White House 'gag order' after Bannon testimony 'Total free-for-all' as Bannon clashes with Intel members Mellman: On Political Authenticity (Part 2) MORE had behaved like someone with “traumatic brain injury.”

“I, you know, understand political arguments,” Bloomberg said on CBS’s “Face the Nation.” “You can disagree with somebody on their views. You can even criticize a lot of their performance. But there is a line beyond which you shouldn't go. And I thought it was about as inappropriate a thing you could say.”

Bloomberg said the former secretary of State would be a “spectacular candidate on the Democratic side” if she decides to run for the White House.

“I have friends on the Republican side, a few of whom may run for president. And I think they are very competent. And I think what would be great for the country if you had two experienced people, people that really had been in government and know what they are doing, and Hillary certainly does,” he said.

Bloomberg added that New Jersey Gov. Chris Christie (R), often mentioned as a potential GOP candidate, will be judged “on the job he does leading New Jersey” instead of the bridge scandal that engulfed his administration.

“You know, it's a long time between now and then. I'm sure he wished that it hadn't happened.”

Bloomberg also said he would not run for the White House himself because he doesn't think an independent could win.

“If I thought I could win, it would be something to consider. But you can't win, and I've given 12 years to public service and I'm not gonna be a candidate for president,” Bloomberg said.

“A lotta times, the party loyalty means a lot to some people, and there's a big percentage of the public that would vote Democratic or Republican no matter who their candidates were. And they're just not, no matter how much the press wants to create an independent because it's good for selling newspapers and inches and minutes as I describe it. They wanna create a battle, but it's just not possible.”