How Obamacare Will Be Settled: A Primer on the Commerce Clause  —  As the Supreme Court hears arguments about the individual mandate, a complete look at the history of similar constitutional decisions.  —  Amid rampant speculation over the fate of Obamacare in the Supreme Court …

President Obama Asks Medvedev for ‘Space’ on Missile Defense — ‘After My Election I Have More Flexibility’  —  SEOUL, South Korea — At the tail end of his 90 minute meeting with Russian President Dmitri Medvedev Monday, President Obama said that he would have “more flexibility” …

NYT reporter: Santorum outburst was for cameras  —  PLAY CBS NEWS VIDEO  —  (CBS News) — When presidential hopeful Rick Santorum lost his cool with the press on Sunday, he was playing to the cameras to build support among conservative Republicans, the New York Times reporter who was on the other end …

James Cameron Completes Record-Breaking Mariana Trench Dive  —  Solo sub dive is deepest ever.  —  The explorer-filmmaker emerges from his sub after returning from Challenger Deep.  —  Ker Than  —  At noon, local time (10 p.m. ET), James Cameron's “vertical torpedo” …

Lobbyists, Guns and Money  —  Florida's now-infamous Stand Your Ground law, which lets you shoot someone you consider threatening without facing arrest, let alone prosecution, sounds crazy — and it is.  And it's tempting to dismiss this law as the work of ignorant yahoos.

The Sad End of the Gingrich Campaign  —  “At an age when most young men are focused on playing sports and meeting girls, Newt was fantasizing about saving the world.”  —Steven M. Gillon, The Pact, 2008  —  Despite Newt Gingrich's best efforts, it looks like the world is going to have to save itself.

Gov. Rick Scott: Give George Zimmerman ‘due process’  —  Florida Gov. Rick Scott said Monday that while his “heart goes out” to the family of Trayvon Martin, the neighborhood watchman who shot and killed the unarmed teenager last month deserves a “true due process.”

GOP race nears tipping point  —  The Republican primary is transitioning from hard-fought campaign to its next stage, a reckoning that Mitt Romney will be the nominee.  —  Newt Gingrich and Rick Santorum have also moved to their next act: hecklers, rather than competitors …

Can Matt Rhoades Go Big?  —  Give Romney's campaign manager credit: His careful defense and kitchen-sink offense have delivered the Republican nomination to a moderate from Massachusetts.  Now Romney and his “Terminator” need the vision thing.  —  BOSTON, Mass. — The day after Super Tuesday …

The First Crack: $270 Billion In Student Loans Are At Least 30 Days Delinquent  —  Back in late 2006 and early 2007 a few (soon to be very rich) people were warning anyone who cared to listen, about what cracks in the subprime facade meant for the housing sector and the credit bubble in general.