By Andy Sullivan and Kim Dixon WASHINGTON (Reuters) - The outgoing head of the U.S. Internal Revenue Service angered Republican lawmakers on Friday by resisting their demands that he identify who at the tax-collection agency had inappropriately targeted conservative groups for extra scrutiny. But during the first hearing into a growing IRS scandal that could preoccupy Washington for months, Republicans did learn that a top official in President Barack Obama's administration knew that the IRS was looking into targeting by the tax agency nearly a year ago. ...

By Joanne von Alroth SPRINGFIELD, Illinois (Reuters) - The Illinois Senate on Friday voted to approve the use of marijuana for medical purposes, which if signed into law would make it the second-most-populous state in the nation after California to allow the drug's use for medical purposes. The bill, approved by the Illinois House in April, now moves to Governor Pat Quinn's desk to await his signature. Quinn has indicated he is sympathetic to the bill, especially as it would benefit injured veterans. "We fully expect Gov. ...

By Michelle McLoughlin FAIRFIELD, Connecticut (Reuters) - A commuter train traveling eastbound from New York City derailed near the Connecticut suburb of Fairfield during the evening rush hour on Friday and collided with a westbound commuter train, injuring up to 60 people, three critically, officials said. The collision of the two Metro North trains forced Amtrak to shut down service indefinitely between New York and Boston, the national railroad said. Three people were critically injured and 60 people were transported to area hospitals, police said. ...