Good Tuesday morning. George Mason University won their tournament championship last night, taking care of William & Mary in style. Watch out, Final Four, this time the men in green mean business. Just a few miles north of the Mason campus, here's what Washington is watching today:

-- The Senate meets this morning for resumed consideration of the budget resolution, while the Senate Appropriations Committee hears from Comptroller General David Walker on waste, fraud and abuse of U.S. funds in Iraq. The Senate Foreign Relations Committee holds a hearing, as well, on possible expansions to NATO. The House comes back today to attempt an override of President Bush's veto of the Intelligence Authorization Act to which he took his pen this weekend. President Bush, meanwhile, heads to the Gaylord Opryland Resort in Nashville to address a convention of national religious broadcasters.

-- New York Governor Eliot Spitzer rocked the political world yesterday with the revelation that he is involved, as a client, in a high-end prostitution ring, bringing a crashing halt to what was once a promising career. Spitzer has been under investigation for months, ABC News reports, first as officials believed he was hiding bribes and then in connection with the Emperor's Club, four of whose operators were arrested last week. The New York Times first broke the story yesterday, and while rumors swirled that Spitzer is considering resigning, he has not done so yet.

-- Spitzer, Politico's Ben Smith writes, has few allies right now. Hillary Clinton's team blames his planned issuance of driver's licenses to illegal immigrants for her initial dip in the polls, after she couldn't handle a question on the matter at a late October debate. The state's African American leaders are not all that close to Spitzer, and have yet to defend him, and while state legislative Republicans have savaged him and called on him to resign, Assembly Speaker Sheldon Silver, the legislature's top Democrat, refused to comment. Many on Wall Street and around New York, who felt Spitzer badgered them during his time as Attorney General, could not point out his hypocrisy fast enough.

-- Back to the matter at hand, Mississippi holds its primary contest today, and it's expected to be a big win for Barack Obama. But what if "big" only leads to one netted delegate? Obama leads most polls by double digits, the Justice Department's Section 5 control over the state's Congressional districts will have an adverse effect on Obama: Clinton can win three congressional districts, The Field writes, while Obama can still win a big majority in the state's mostly-African American Second District and walk away with a net gain of one delegate.

-- Obama's still drawing huge crowds, including 1,700 yesterday in Columbus and 9,000 to Jackson, Mississippi, according to the AP's Babington. Today he moves on to Pennsylvania, but the win, his second in a row following weekend caucus victories in Wyoming, could subtly shift the momentum back in his direction. In fact, one key to watch: How big are Obama's crowds in central and western Pennsylvania? If they become sufficiently big, and he catches Clinton in the polls, will more super delegates begin to flood to his side, negating the benefit Clinton reaped from Ohio and Texas wins?

-- The Clinton team spent another day dropping hints that Obama is good Vice Presidential material, but what if the talk backfires? The New York Senator has been hinting that she would gladly put Obama on her ticket, a notion Team Obama is doing well to scoff at, given that he's ahead at the moment. But Obama-as-Veep is a minefield: Howard Wolfson, Clinton's communications director, suggested that Obama may somehow pass a Commander-in-Chief test by the convention (how convenient), and some Clinton surrogates, including Pennsylvania Governor Ed Rendell, are now saying she herself would accept a veep nod if offered (not something donors want to hear). The debate could turn irritating to many Democratic super delegates in very short order. Will Clinton keep toeing the line?

-- John McCain, the forgotten candidate amid the continued Democratic fight, is plotting his grand entrance to the general election stage. While Clinton and Obama bicker over who is most presidential and most able to answer a 3 a.m. phone call, McCain will head to Europe and the Middle East with a congressional delegation, with a stop planned for Israel on March 18, Reuters reports. That's a visual that will certainly break through Democratic squabbling, at least for a little while, and the trip will go just that much farther to refocusing the debate from change to experience, and from domestic policy to foreign policy.

-- Along with a foreign policy tour, at the end of which McCain will offer a major address, the GOP nominee will launch a biographical tour and is continuing a fundraising blitz designed to bring him even with his Democratic foes. McCain's bio tour will include stops at his high school and college alma maters (the latter being the Naval Academy) as well as at McCain Field, a military base in Mississippi named for his grandfather, USA Today reports. But, suspicious as ever, McCain has to return to Start to begin the last leg of the race: He will hold a town hall meeting in New Hampshire, the state that launched him to the nomination, tomorrow.

-- Obama's biggest liability is a lack of experience. Clinton's is as a divisive character in politics. McCain's is his age and health. His years in the Hanoi Hilton and his bout, eight years ago, with skin cancer have prompted a few news organizations to ask after him lately, and his campaign wants to shut down those questions right quick. McCain underwent a medical checkup yesterday in Phoenix, and, he told reporters, including the Arizona Republic's Dan Nowicki, "everything's fine." What of his recurring melanoma? McCain said he had the cancer check a few weeks ago and came back clean, the AP wrote. Not exactly the way to kick off being the presumptive nominee, but McCain has a history of getting the annoying questions out of the way first.

-- Bad GOP Omen Of The Day: Dick Cheney headed to Atlanta for the Georgia Republican Party's huge annual fundraising gala, and as Senator Saxby Chambliss seeks re-election, the state's senior senator was absent even as his party's number-two official sang his praises on stage. "I know Saxby is going to win another term this November," Cheney told the crowd, per the LA Times. "Saxby, of course, is a very courageous man. I know that because he's one of my hunting buddies," the vice president joked. How many Republicans, even in ruby-red states like Georgia, will be courageous enough to stand with Cheney?

-- Today On The Trail: John McCain is in St. Louis, Missouri today, after leaving the sunny (and probably warmer) climes of Sedona, Arizona. He holds two town halls there today. Barack Obama hits a town hall in Fairless Hills, Pennsylvania, just northeast of Philadelphia, while Hillary Clinton has rallies planned for Harrisburg and Philadelphia. Politics Nation will bring you live reports from both the Clinton events.