The President is supposed to be "an asset". An asset of the USA. They are subservient to an institution, despite being granted certain powers and authority.

Nixon once said "If the President does it, it's not illegal", despite that being just nowhere to be found in the Constitution in any form, yet that statement caused a bunch of right wing think tanks and policy institutions and voters to agree so wholeheartedly that they spent 70 years ensuring it would become reality.

Significant portions of the Republican party have been trying to make the US a monarchy again for decades.

That term is widely used in multiple contexts.