This is maybe a nit, but a unicameral parliamentary system has much more power concentrated in parliament than the US system has in any branch. Parliament combines the powers of the house, senate and executive branches, but with a composition of structure that mirrors the House of Representatives. This scandal is much worse than a representative taking bribes since MPs have substantially more power than US representatives.
To nit the nit, Canada is a bicameral legislative system, but the upper house (Senate) is appointed rather than elected and is generally deferential to the House of Commons (though not always). Senators tend to sit for a long time and take a lead role in things like long term reports and recommendations from the civil service.
The Prime Minster and Cabinet hold executive power. The PM and individual ministers have far more power than the US president in some cases, less in others, especially with a very different set of powers delegated to the provinces. The Prime Minister controls the legislature itself and its agenda far more directly than the US President.
The Speaker of House role is very different and while it's an MP from the government, they are expected to be highly neutral in all matters (something the current speaker is struggling with).
The PM is not the head of state the way the US President is. That role is held by the Governor General, who has quite extreme theoretical power. In practice they defer to the sitting government in nearly all cases.
True, but more on paper than in practice. The Senate, Governor General and the King all take a back seat and it is unclear what would happen if they actually exercised their formal rights. I suspect that the entire country would blink and go on as if nothing happened should King Charles ever attempt to withhold royal assent.
