What effects does Partisanship do to Congress's Functions?

-Legislative Gridlock: A United Party Group comes at the Expense of not Cooperating with the other Political Party. This can hamper Legislation -Oversight: More Partisanship means the Presidential Power, during a Divided Government, is significantly Challenged more. In Unified Government, it is more Relaxed and often Fails to Provide Oversight. In 2017: the Senate was seen, and accused, of not providing Full Scrutiny of several Trump Cabinet Nominations, given how Fast the Ratification took place -Representation: Politicians may sacrifice the wish of their Constituents to follow the Party Line. This becomes more extreme during times of Hyper-partisanship