Unreal-- DHS says it temporarily put FEMA chief Peter Gaynor in charge of the department Nov 14 so he could change the order of succession to make Chad Wolf eligible for acting secretary job. Then Wolf re-issued all the orders that were under legal cloud https://www.dhs.gov/publication/dhs-statement-recent-challenges-acting-secretary-wolfs-authority

A reminder DHS was created in no small part to project stability and competence to an American public traumatized by 9/11. Under Trump the department has had 5 different leaders, only two confirmed by senate, and nearly all of its top jobs are filled by acting figures or vacant

Here's how DHS explains the making of the sausage: "Once Mr. Gaynor’s order was executed, it superseded any authority Mr. Gaynor may have had under the Federal Vacancy Reform Act and confirmed Acting Secretary Wolf’s authority to continue to serve as the Acting Secretary."