Final answer:
The economic problem the United States was suffering from when John F. Kennedy became President was deficit spending.
Step-by-step explanation:
One economic problem the United States was suffering from when John F. Kennedy became President was deficit spending. Deficit spending occurs when the government spends more money than it receives in revenue, resulting in a budget deficit. This can lead to increased borrowing, inflation, and a weakened economy. Kennedy implemented policies to address this issue, including tax cuts to stimulate economic growth and the creation of new jobs.
Learn more about Deficit spending in the United States during John F. Kennedy's presidency