Explain why the Rational theory may be not as useful when comparing the UKCON and USCON

-There is not a lot of Individuals to act Selfishly when Considering Constitution -But it could be applied when considering Differences in Federalism and Devolution, as well as Separation of Powers vs Fusion of Powers -For Example, Congressional People may care more for their Constituents, whereas in the UK, MPs care more for their own Party