Why Government Has Three Branches

The United States government splits its power into three branches, and the split is on purpose. The writers of the Constitution had just fought a war against a king, and they wanted to make sure no single person or group could ever grab all the power again.

The legislative branch - Congress - makes the laws. The executive branch - the President - carries the laws out. The judicial branch - the courts - decides what the laws mean when people disagree. Each branch has its own job, and each can push back on the others.

That pushing back is called checks and balances. Congress can pass a law, but the President can veto it. Congress can override the veto with enough votes. The courts can strike down a law that breaks the Constitution. The system is slow by design - slow enough that big changes need broad agreement.