The US Supreme Court heard 3 days of arguments over the Affordable Care Act. Is this the end of the mandate? Our system of social insurance? What of judicial deference?

President Obama speaks out on the killing of unarmed Florida teen Trayvon Martin. Is it right for a president to weigh in on a federal investigation?

GOP hopeful Rick Santorum's hopes spring eternal after GOP primary wins this week. Romney still has a commanding lead, but what might a brokered convention look like?

This week the President claimed credit for the unemployment rate not going up. After a visit from Israeli PM Netanyahu can he claim credit for Israel not hitting Iran?

Ahead of Super Tuesday, the GOP fans the debate over birth control coverage...and gets burned. The President has tough words for Iran. Another moderate lawmaker retires.

Romney hangs Santorum by his Senate record. Gas prices keep going up -- but is that such a bad thing? Oh right, maybe it is. US winks at, nudges Syria's opposition.

Mitt Romney?s Michigan problem. Apple's China problem. Congress quietly passes a budget. A new novel warns of an economy ruled by robots ? but is it already upon us?

The Obama Administration changes health insurance rules on birth control; Rick Santorum gets a rousing welcome at CPAC and the rest of the week's political happenings.

A breast cancer research funder learns the power of the web -- the hard way. Mitt Romney gets schooled on the power of the sound-bite after a "very poor" choice of words.

Whether it was the President's State of the Union or the GOP debate in Jacksonville, Florida, passions were on display this week for the President and his challengers alike.