The Constitution takes up the issue of the Chief Executive in Article II, which sets out several fairly specific conditions that must be met if an individual is to serve in the position. A United States president, or candidate for president, must be at least thirty five years old, have been born in the United States and resided in the United States at least fourteen years of his (or, maybe someday, her) life. A person not born in the United States may not become president, even if said person becomes a naturalized citizen. Additionally, a 1951 amendment established that a president may serve no more than two terms, and a president who comes to office for a partial term, as in the death of a sitting president, will be permitted only to serve one other term. This, of course, came on the heels of the "reign" of the polio stricken Franklin Delano Roosevelt, who was elected for four consecutive terms, before dying in office and forcing Harry S. Truman to assume the presidency.