Kevin McAleenan Says He Won't Testify In Hearing, Despite Subpoena

Kevin Mcaleenan, the outgoing Homeland Security Secretary, will not testify at an upcoming hearing despite being subpoenaed. He cites the need to focus on a smooth transition as his reason. Mcaleenan expressed surprise at the subpoena, given his past relationship with committee chairman Bennie Thompson. The subpoena was issued for a hearing on October 30th about terrorist threats. Mcaleenan claims the subpoena violated committee rules, a point Thompson disputes. Despite the disagreement, Mcaleenan remains listed as a witness.

What was the scheduled date for the hearing that Mcaleenan was subpoenaed for?

How did Thompson respond to Mcaleenan's claims regarding the subpoena?