AHC/WI: Semi-Presidential United States Government

What it says on the tin. With a POD after 1789, have the United States adopt a semi-presidential system of government, akin the one used by France, Russia, and others.

How does this affect the United States? Would this make a better, or worse fit than OTL's system? Would such a system even work in the US, or would it exacerbate existing tensions in the legislature?
 
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