The Department of Justice is reviewing the need for a new law to address domestic terrorism, a top official said Thursday. “That is something that we are thinking about as we are looking at all of our tools to see if we might have a threat environment, are we doing everything we can to counter the threat. One of the things we are looking at is what we need to do with authorities,” Brad Wiegmann, deputy assistant attorney general at the department’s National Security Division, testified to Congress. Officials have been “pretty successful” in using existing laws to charge alleged criminals with hate crimes and other charges. “The question we’re really wrestling with is, are there gaps? Is there some type of conduct that we can envision that we cannot cover or would be a benefit, otherwise benefit in having something else other than what we’re having now,” Wiegmann added. …