Nothing is going on. These “delegations” are routinely issued by every administration since forever; they’re how the boss (that’s the president) tells their subordinates (that’s the cabinet officers) to do something. For example, section 104(a)(1) of the “Rebuilding Economic Prosperity and Opportunity for Ukrainians Act” is Congress asking for a report on what Russian assets are under American control, and this document is Biden telling the treasury secretary to do it.