Is anyone available to help me?

I need to create a metaphor to describe the structure of our federal government

The example they provided is "The American Government is a tripod; without each post, it would collapse."

I can't find anything that fits very well. Any ideas on what I can compare it to.

5 answers

The American government is an equilateral triangle. All sides and angles are equal.
Thank you that make perfect sense
You're welcome. :-)
The American Government is a three legged tepee in a political wind storm.
Bobpursley has a better metaphor than mine! :-)