It is unclear, at this point, if the officials will accept the invitation to testify. The announcement of the hearing comes after Peters, Portman, Klobuchar, Blunt and a number of other Democrat and Republican Senate Committee leaders requested 22 agencies and departments to provide information related to the preparations for the response to the Capitol riot — which took place during a joint session of Congress intended to certify the Electoral College results in favor of President Biden. The senators also requested information on the "subsequent security failures." Sund resigned from his post on Jan. 7, the day following the Capitol riot. That resignation took effect on Jan. 16.