Politic- president v PM

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The comparison of the US President and the British Prime Minister appears from the onset, to provide some interesting differences since the President holds the position of Head of State as well as Head of Government. The Prime Minister, it would appear, has more influence in domestic, legislature and to an extent, executive branch.

The US President, on the other hand, appears to have the position of supremacy in domestic politics, chief legislator and dominates his executive. He does not hold the same position of power in domestic affairs as the Prime Minister, but his position of strength appears to be in the realm of foreign and international matters, in which he faces little challenge from Congress.

It would appear that both offices hold different powers. The British Prime Minister, as shown by past examples, usually holds substantial power over the party from which their power starts from. The absence of a clear separation of powers in the British system gives the British Prime Minister the position of, head of the majority party in parliament. Due to such a strong link between the Prime Minister and his party he can often expect loyalty as a matter of course when forwarding legislation.

The President can not though, as no direct link exists between he and his party colleagues in Congress, a situation created by the 'separation of powers', a primary intention of the Founding Fathers when writing the Constitution to prevent executive dominance.

The Prime Minister also has, at his disposal, a powerful Whip system to maintain party loyalty. MPs are faced with the threat of losing career prospects, temporary suspension, the enmity of their colleagues, failure to be selected by their constituency party, and the ultimate sanction of expulsion from the party. Such weapons make the Whips a vital tool to the Prime Minister in maintaining party loyalty.
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The power, which each office holds over the passage of legislation, is of great significance in determining which office holds the most power as a whole. Parliament may be sovereign but when considered thoroughly, this is only a theory. This view tends to show that the British Prime Minister, who usually maintains the support of a parliamentary majority, holds a position of dominance over the passage of legislation.

The American system though, due to the 'Separation of Powers' between the Executive and legislative branches, provides a limit to Presidential power over the passage of legislation. The ...

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