Some people are skeptical on the legitimacy of what some are calling “emergency” security clearances given by executive order[1] but there’s no evidence this is not within the bounds of the president’s power. An expedited clearance could have been granted in 48 hours but presumably the backlog has already lasted longer than that and would hamper plans for the first month in office.
[1] https://www.whitehouse.gov/presidential-actions/2025/01/memo...
That EO says:
The White House Counsel to provide the White House Security Office and Acting Chief Security Officer with a list of personnel
Where do you see that the CSO has granted access to those specific individuals? For the record, I'm not saying they are or are not on that list, we just simply don't know. If they have not been granted security clearance then there is in fact a law that makes it illegal to access federal systems and those boys are in for some trouble.