Republican Split between Conservatives, Really Conservatives

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