UPDATE @ 3:00 PM: UPDATE: Sen. John Warner speaks about new job at old firm with National Journal's Jeannette Lee:

Warner said he will draw on his expertise on national security and international trade and "put a good deal of time into environmental issues related to global climate change." In 2007, he co-sponsored a bipartisan bill with Sen. Joe Lieberman, D-Conn., that would have reduced greenhouse gas emissions in the U.S.

He said he has started "quietly working" with Hogan & Hartson, however, his official start date isn't until April.

Warner will not be allowed to lobby his former colleagues, and said he intends to "adhere strictly" to the relevant ethics laws and Senate rules. "I do not foresee my activities, which will be unrestricted with respect to the executive branch, will constitute lobbying," he said.

Since leaving Congress, Warner has been working with archivists at the University of Virginia, where he earned his J.D., to organize personal documents spanning his 40 years in government service. The photos and papers will be made publicly accessible "as soon as they are collated," Warner said.

He said the knighthood recently bestowed upon him by Queen Elizabeth II had "no connection" with Hogan's decision to recruit him.

--- (Original posted this morning)

Former Senator John Warner, R-Va., is rejoining his old law firm, Hogan & Hartson as a partner.