The Federal Railroad Administration launched an investigation after a derailment in December that killed four passengers and injured 70.
House Republicans passed a bill that would change Medicare's pay formula. To pay for it, the bill would delay penalties for people who don't buy insurance under the Affordable Care Act.
The more fast food you encounter where you live and work, the likelier you are to be obese, research shows. That suggests policies limiting fast-food outlets in neighborhoods may be onto something.