Sen. Al Franken (D-Minn.) Thursday afternoon cut off Sen. Joe Lieberman (I-Conn.) during his speech on the Senate floor. 

Franken was presiding over the Senate during Lieberman's remarks about healthcare amendments he planned to offer.

Lieberman, who has drawn the ire of liberals over his opposition to the public health insurance option, asked for an additional moment to finish but Franken refused to grant the routine requrst

"In my capacity as the senator from Minnesota, I object," Franken said.

"Really?" replied Lieberman.

Franken spokesman Jessica MacIntosh told the Associated Press that Franken cut off Lieberman because Democratic leaders are rushing to complete work on the healthcare legislation.

GOP Sen. John McCain (Ariz.) defended Lieberman on the Senate floor, saying he'd never witnessed a senator's similar request be denied.

"I must say that I don't know what's happening here in this body but I think it's wrong," McCain said.