Attorney General Eric Holder said Tuesday he will reconstitute a long-defunct task force on domestic terrorism to try to expand efforts to stop violent attacks inside the U.S.

The task force the Justice Department is reviving was originally launched in the aftermath of the 1995 Oklahoma City bombing. It was scheduled to meet on the morning of Sept. 11, 2001, but given the terror attacks of that day it didn't meet, and the group's work was quickly eclipsed by the response to those attacks and the effort to defeat al Qaeda in...