Poll: Most Americans Want Death Penalty If Boston Marathon Suspect Found Guilty

Poll: Most Americans Want Death Penalty If Boston Marathon Suspect Found Guilty
FILE - This combination of undated file photos shows Tamerlan Tsarnaev, 26, left, and Dzhokhar Tsarnaev, 19.

Investigators continue to build a case against the surviving Boston Marathon bombing suspect. Meanwhile, ABC's Aaron Katersky has the results of a new poll.