How about Obama continuing to wield power inside the White House? (See details in the linked article.)
How about these aspects of the "fundamental change" Obama wrought:
The NSA Database was weaponized to conduct political surveillance.
The Dept of Justice was weaponized to target their political opposition.
The Federal Bureau of Investigation was weaponized to act as the police investigative units for those targets.
The Dept of Homeland Security was weaponized to control the evidence and information about their political targeting and surveillance.
The IRS was weaponized against Obama’s political opposition.
The Office of the Director of National Intelligence was weaponized to allow the targeting radar to sweep internally against American citizens under the guise of national security and domestic terror threats.
The Central Intelligence Agency was weaponized allowing and permitting their “foreign surveillance” mandate to merge with the DHS internal surveillance mandate, while simultaneously the CIA conducted overseas political operations against the interests of sovereign countries. All of their activity in ideological alignment.
The Defense Department was purged of patriotism, intentionally weakened through diversity equity and inclusion, and then boiled down to a flag corps of general willing to go along with the policy of Obama.
Main Justice through the National Security Division used FARA violations to target anyone who was determined a threat to the fundamental change, and Main Justice began wholesale Lawfare operations against Donald Trump and any entity who would dare align with him.
https://theconservativetreehouse.com/blog/2024/07/28/it-all-tracks-hersch-reports-barack-obama-threatened-biden-with-25th-amendment-removal/