Finger Pointing Starts After Boston Bombings

Finger Pointing Starts After Boston Bombings
A mourner reacts as she departs St. Patrick's Church in Stoneham, Mass., with others following a funeral Mass for Massachusetts Institute of Technology police officer Sean Collier, Tuesday, April 23, 2013. Collier was fatally shot on the MIT campus Thursday, April 18, 2013. Authorities allege that the Boston Marathon bombing suspects were responsible. (AP Photo/Steven Senne)

Senators say they have a lot more questions than answers about the Boston investigation so far. ABC News Correspondent Sam Donaldson has the latest on the "finger pointing" that has already started.