Even ignoring your flawed understanding of the UK's government, what is your glorious bill of rights worth at the end of the day? Your president just does whatever the hell he wants, ignoring any checks and balances as he sees fit. Freedom of speech? Well, as long as you don't criticise a certain deceased extremist, that is. Freedom of religion? Well, as long as you're a Christian. Freedom of the Press? As long as you're a right-wing influencer. Freedom of assembly? As long as you're not a Democrat. Right to petition the government? You might get shot by ICE agents for following their orders.