Marc Short, who was chief of staff to then-Vice President Mike Pence, is cooperating with the House committee investigating the Jan. 6 riot at the Capitol, according to two people familiar with the panel's activities.
"He is," one of the sources said. "So far."
A second source, who confirmed that Short was subpoenaed, said the panel is in the process of assessing what information Short might be able to provide.
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