Brewer?s tense exchange with Obama  —  It was a tense moment on the tarmac.  —  President Obama, alighting from the stairs of Air Force One in Phoenix this afternoon, was greeted by Arizona Governor Jan Brewer, who handed him an envelope and the two exchanged what appeared to be some heated sentiments.

Warren Buffett and His Secretary Talk Taxes  —  ABC News' Seniboye Tienabeso reports:  —  In a week when taxes and tax returns have dominated the headlines, billionaire investor Warren Buffett jumped back into the political debate and showed his returns exclusively to ABC News' Bianna Golodryga …

Florida's Rubio a star, but an unlikely VP pick  —  (Reuters) - He could be the Republican vice presidential candidate from central casting: telegenic, Hispanic and a fiscal conservative who has been embraced by the Tea Party.  —  That is why Florida Senator Marco Rubio …

Gingrich admits ABC claim was false  —  After nearly a week on the defensive, CNN's John King reports tonight that Newt Gingrich's claim about offering witnesses to ABC News in his defense — to rebut the network's interview with his second wife, Marianne Gingrich — was not true.

The right drops a bomb on Newt  —  Newt Gingrich better hope voters who lapped up his delicious hits on the “elite media” and liberals don't read the Drudge Report this morning.  —  Or the National Review.  Or the American Spectator.  Or Ann Coulter.  —  If they do, Gingrich comes off looking …

The iEconomy: Apple's iPad and the Human Costs for Workers in China  —  A staggering manufacturing system in China has made it possible for Apple and other companies to make devices almost as quickly as they can be dreamed up, but for workers, it can be dangerous.

First Thoughts: A turning point for Obama?  —  Are we seeing a turning point on the economy and for President Obama? ...  It's a coin flip in Florida ... The candidates debate one last time before voters go to the polls there - what to watch for ... It's Vegas, baby, Vegas for Obama …

How the Schneiderman Panel Could Work  —  Visit msnbc.com for breaking news, world news, and news about the economy  —  I got a lot of response to my post on the new federal financial fraud unit (not to be confused with the old financial fraud unit) looking into mortgage origination and securitization abuses.

Barack Obama: GOP field ‘wrong for America’  —  President Barack Obama won't say whether he thinks Mitt Romney or Newt Gingrich would be a tougher challenger, but, either way, he's certain that the difference between him and the Republican at the top of the ticket will be stark.

Former President John Tyler's (1790-1862) grandchildren still alive  —  Former President John Tyler, born 221 years ago, still has two living grandchildren.  The one-term president isn't a well-known historical figure; he's probably best remembered for helping to push through the annexation of Texas in 1845 …

Economy Gives Obama a Lift  —  Mitt Romney mounted a fresh attack on President Barack Obama's stewardship of the economy Wednesday, while a new Wall Street Journal/NBC News poll raised caution signs for Mr. Romney's strategy of putting the economy at the center of his campaign.

Barney Frank to marry longtime partner  —  Retiring congressman Barney Frank (D-Mass.) will marry his longtime partner, Jim Ready.  —  Frank and Ready plan to wed in Massachusetts.  Frank's home state is one of six states, in addition to the District of Columbia, which permit gay marriage.

Perry's job approval plunges after failed presidential run, News poll shows  —  Gov. Rick Perry, campaigning last week at a Veterans of Foreign Wars post in Murrells Inlet, S.C., before he exited the presidential race, has seen his job approval rating plunge in Texas, according to a new poll.

36 Obama aides owe $833,000 in back taxes  —  Pete Souza / White House (Obama addresses his White House staff, file)  —  How embarrassing this must be for President Obama, whose major speech theme so far this campaign season has been that every single American, no matter how rich, should pay their “fair share” of taxes.

Massachusetts Health Reforms: Uninsurance Remains Low, Self-Reported Health Status Improves As State Prepares To Tackle Costs  —  1Sharon K. Long (slong{at}umn.edu) is a professor in the Division of Health Policy and Management, School of Public Health, at the University of Minnesota, in Minneapolis.

Kaiser Health Tracking Poll — January 2012  —  As the Supreme Court prepares to hear legal challenges to the health reform law in March, most Americans expect the Justices to base their ruling on their own ideological views rather than their interpretation of the law, according to the January Health Tracking Poll.

Arizona Candidate's English Under Challenge  —  Alejandrina Cabrera's political opponents in San Luis, Ariz., say she cannot speak English well enough to serve on the City Council.  —  In Address, Obama Makes Pitch for Economic Fairness  —  By HELENE COOPER

Lobbying Expenditures Slump in 2011  —  Contact: Viveca Novak, 202-354-0111  —  Michael Beckel, 202-354-0108  —  The nation's economy may be slowly rebounding, but during 2011, the economic engine of K Street sputtered.  Overall expenditures on lobbying were down for the first time in more than a decade …

Santorum counters Florida exit talk, says he will be in state through Monday  —  His campaign released the candidate's schedule to push back against talk Santorum is pulling out of the state.  —  Rick Santorum's campaign countered reports that the former Pennsylvania senator is considering pulling …