The current limit is eight years (two terms of four years each).
4 years!
A president serves for at most 2 four-year terms.
You can be Vice-president for as long as you can be re-elected to the office. There are no term limits for the VP.
The term is four years and coincides with the president's term.
Life.
For as many terms as they were elected.
Yes a former US President can run for office of Vice President of the United States. A former US President can run and be elected for any other type of office.
Executive office of the president
President Obama holds the office because, after a long and arduous campaign, he received more votes.
Generally an ambassador keeps his job only as long as the president that gave him the job is in office.
The first US president took office in 1789.
George Washington