“’The focus on immigration to me has meant the senior leadership could not possibly have as much of an in-depth feel for the terrorism and counterterrorism set of issues,’ Nicholas Rasmussen, former director of the National Counterterrorism Center who worked on the issue under the last three administrations, said in an interview. ‘When you get into crisis mode, you can’t just acquire that experience.’

“Rasmussen and some former DHS officials and security specialists applauded aspects of the department’s response, however, pointing to a cyber threat warning released by its Cybersecurity and Infrastructure Security Agency, or CISA…”

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