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A bipartisan Senate plan unveiled Monday to overhaul the U.S. immigration system frames a pitched debate expected in Congress around the areas of border enforcement, a path to citizenship for those already in the country and the future flow of new arrivals.

If doctors would just pay attention to how much things cost, they might be more careful when ordering tests for patients, right?

Well, that's the theory behind some research and projects to cut wasteful health spending. But a study at Johns Hopkins Hospital found that changing doctors' behavior may be not be as easy as simply making them aware of prices.

The new U.S. military policy on women serving in combat roles was crafted in Washington, but it will play out in places like Afghanistan.

And sitting outside at the military base at the Kabul airport, male and female troops offered their thoughts on what the new policy might mean.

"I wasn't completely surprised with it. It's not anything we haven't discussed before," said Capt. Monica Paden, a military intelligence officer from San Diego. "We have been slowly being integrated into combat arms and into units in support roles."