Legislative branch; enacts laws, controls the budget, and oversees the executive branch.

Head of the executive branch; enforces laws, manages federal agencies, and sets policy goals.

Judicial branch; interprets laws, resolves disputes, and ensures laws are constitutional.

Reviews and coordinates federal regulations to ensure effectiveness and alignment with presidential goals.

Cause: Illegal activities by Nixon administration. Effect: Congressional investigations, Nixon's resignation, increased focus on government ethics.

Cause: Terrorist attacks on the U.S. Effect: Creation of Department of Homeland Security, increased security measures, wars in Afghanistan and Iraq.

To expand health insurance coverage, improve healthcare quality, and reduce healthcare costs.

To reduce carbon emissions from power plants and combat climate change.