Morning Buzz: Jan. 31, 2008

One day after picking up the endorsement of former presidential hopeful Rudy Giuliani, John McCain is expected to receive the endorsement today of another high-profile Republican: California Gov. Arnold Schwarzenegger. Aides say the announcement will be made at a news conference in Los Angeles.

The Senate may begin voting today on several measures associated with the economic stimulus package that recently passed in the House. Several senators have proposed additional measures to extend rebates and benefits to disabled veterans and more wealthy individuals, setting up a potentially contentious debate.

John McCain and Mitt Romney squabbled repeatedly last night about their records on the war in Iraq, with McCain reiterating his contention that Romney, for political purposes, had failed to speak out in support of the surge when it was first proposed in 2006. Visibly annoyed, Romney at one point leaned backward, slung his right arm over the back of his chair, and fixed his other hand like a spear at his opponent.