King said Tuesday in his letter to Thompson that expanding the investigation to include other groups would be "extraneous and diffuse the efficacy" of the hearing while sending a "false message" that the committee believes there is "any threat equivalency between these disparate groups and Islamists terrorism."
"The homeland has become a major front in the war with Islamic terrorism and it is our responsibility to fully examine this significant change in al Qaeda tactics and strategy," King wrote. "Al Qaeda has realized the difficulty it faces in launching attacks against our homeland from overseas. Thus it has adjusted its tactics and is now attempting to radicalize and recruit from within our country. In the last two years alone more than 50 Americans have been charged with terror related crimes."
Today, King said that the recent string of terrorist attacks and attempts in the United States prove the growing threat of Islamic radicalization [LINK: http://abcnews.go.com/Politics/Blotter/american-al-qaeda-now-pose-clear-threat-homeland/story?id=11972691].
"This threat is real, and we can hardly afford to ignore the motivating ideology behind nearly every recent homegrown attack, such as the Zazi plot (to attack the New York subway system), the Times Square (bomb plot), Fort Hood, the Portland Christmas bombing attempt, and numerous others," King added.