The Good Summarian

Ezra Klein's Wonkbook notes a Wall Street Journal story about the dangers the financial reform bill faces after Sen. Robert Byrd's death. Other key senators who have expressed reservations about the bill, which will be voted on this week, are Olympia Snowe, Scott Brown, Russ Feingold, Susan Collins, and Evan Bayh.

Mike Allen's Playbook highlights another Democratic priority imperiled by Byrd's passing: climate. Allen cites Politico's report that "a new freshman Democratic senator from West Virginia will face considerable pressure to vote against any type of carbon limits given the state's pro-coal politics."

Chris Cillizza's Morning Fix focuses on six senators to watch during Elena Kagan's confirmation hearings: Orrin Hatch, Lindsey Graham, Arlen Specter, Al Franken, Dick Durbin, and Chuck Schumer. As the latter two question Kagan today, Cillizza writes, they will be vying for their caucus's confidence as potential majority leaders should Harry Reid's re-election bid fail.

ABC's The Note links to the Wall Street Journal's report that Gen. Stanley McChrystal has decided to retire from the military.

The Daily Beast's Cheat Sheet points to a Financial Times story detailing China's threat to strip Google of its operating license if the search engine doesn't stop redirecting Chinese users to its Hong Kong site in order to avoid censoring material.