Despite the back-and-forth arguing among members of opposite political parties, government action and public policy is influenced by an ongoing series of?

Compromises

Explanation:

When different parties are working together in a legislative branches, they tend to be working against one another since each party tends to have a different idea regarding the proper way to manage the economy.

(For example, the Republicans tend to want to lower taxes for business to flourish, the democrats tend to want higher taxes for increasing government budget in welfare, etc)

Because of this, they often have to compromise with one another during the legislative process. Sometimes, one party will let another party win when Creating certain legislation and that other party will return the favor when they are discussing another type of legislation.