Republican Split between Conservatives, Really Conservatives

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In response to the President's State of the Union speech this week, Florida Senator Marco Rubio spoke for mainstream Republicans. But the Tea Party Express had its own voice: Senator Rand Paul of Kentucky. We hear about a party divided over pragmatism and principle. Also, American Airlines and US Airways merge, forming the world's largest airline. On Reporter's Notebook, the International Space Station is safe — as is the planet Earth — but astronomers are paying attention to an asteroid that will pass inside the orbits of GPS satellites — tomorrow.

Banner image: (L) Senator Marco Rubio (R-FL) gave the Republican response to President Obama's State of the Union address; (R) Senator Rand Paul (R-KY) gave the Tea Party response