The longest-serving president was Franklin Delano Roosevelt, who was elected to four terms as president and served twelve years before dying in office (from American National Biography Online).
After Roosevelt's death, the ratification of the 22nd Amendment in 1951 limited the number of terms to which any person can be elected president to two (from the National Archives).
Grover Cleveland was the 22nd President serving from 1885-1889 and the 24th President serving from 1893-1897.
2 terms of 4 years
Robert Byrd He was the longest-serving senator and the longest-serving member in thehistory of .... The country needs young men like you in the leadership of thenation. ..... Let us defend the oldest
because the longest you can serve is 8 years.
The US constitution limits a US president to serving two terms in office.
She was the longest-serving British monarch in history. She served a total of 63 years.
In the usa, the president can serve up to two terms, each being 4 years. The president can only serve the second term if he/she is elected again.
if you mean how many terms they can serve, they can only serve two four-year terms at once but they can run again after another president has been elected.
They are called "lame ducks".
10 years (not 8) [novanet]
Barack Obama served as the 44th President of the United States from January 20, 2009, to January 20, 2017. He was elected for two terms, serving a total of eight years.
every US president is limited to 2 terms, regardless of whether they served them consecutively or fragmented. There has yet to be a president to serve once, wait a term, and serve again. Fun Fact: although presidents may only serve for 3 terms, an individual may serve for 10 years as president. A vice president may serve for 2 years, in the absence of a president, and the term would not count towards his total term.