Jhon Adams
No, a person cannot serve as both President and Senator at the same time.
The first president to serve in both WWI and WWII was Franklin D. Roosevelt.
No, Gerald Ford was not the only person to serve as both president and vice president. Before him, Thomas Jefferson and John Adams had also served in both positions. Jefferson was Adams' vice president before becoming the third president of the United States.
William Howard Taft was the only person to serve in both offices. He was US President from 1909-1913, and Chief Justice from 1921-1930.
Speaker of the house
Secretary of state.
i ave no clue
Eisenhower was the only president to serve in both World War I & World War II.
The Speaker of the House of Representatives.
They both serve four-year terms.
John Hancock, for both.
Dwight Eisenhower. The Constitutional amendment limiting the time a person can be President passed during the Presidency of Harry S. Truman. It took effect for the next President who was President Eisenhower when he was elected in 1952.