1. Macroeconomics deals with the economy as a whole and decision making by large units such as governments and unions. 2. The federal government impacts the economy through the size of its budget, which is approximately $2 trillion, and by controlling the money supply through the Federal Reserve. 3. Ben Bernanke currently serves as Chairman of the Federal Reserve, which tries to balance the economy between inflation from too much spending and recession from too little spending by raising and lowering interest rates to make borrowing money more or less expensive.