There is one force that controls what major things happen in the government.
Which COVID policies are enacted.
How open the border is.
The future demographics of the country.
Which wars we support or fight in.
Which truths are allowed to be told.
Who is allowed to be elected to the Presidency.
Whether the President will be spied on or not.
Whether the President will be killed or not.
What the Federal Reserve policies will be.
etc...
Certainly there is some room for politics and partisan wrangling when it comes to unimportant issues like social issues and dividing up the spoils of the American corpse amongst themselves.
But on the important issues, there is one entity calling the shots.