analyse the effectiveness of checks on the US President and the UK Prime Minister

US President:

UK Prime Minister:

theory

has executive orders and so can bypass legislature relatively easily eg: Trump pausing military aid to Ukraine in early 2025

legislature checks enforced more extensively with the processes required to pass legislations » often faces rebellion eg Sunak scandal

structural

is not directly accountable to Congress

PM regularly participates in PMQs

does not necessarily have party support throughout Congress » only when trifecta is held

controls Parliament by having a majority