ronib
Grandmabatty The points about any government and bureaucracy apply regardless of country and individual players. So seems to me that the power struggle between say Sunak and his Rwandan scheme are in the same place as Trump’s at the moment. It’s not personal.
If the government want s to change a law they do it by putting a bill through parliament, the legislative body and getting it passed. It is Parliament that represents the 'will of the people'(dreadful phrase) not the President or the PM. Parliament is free to block any bill if it feels that it is not for the good of the country. Parliament makes the law, not the government.
Of course, Parliament is most likely to pass government bills because the government has a majority of seats, but the principle remains. Parliament can, of course, call for a vote of no confidence, or vote against a bill, it is not obliged to respect the government's 'mandate'.
Once a bill becomes law it is the job of the judiciary to make judgements based on that law and existing law. If the judgements inconvenience the government then so be it.
It is the job of the civil service to implement the directions of the government within the framework of the law.
Also, if the country is signed up to international laws, treaties etc. it can be challenged on the legality of its actions if they contravene the law or treaties.
No-one in the country is above the law. It applies to everyone.
Once we lose the Rule of Law all hell lets loose.