The US at one time may only have one president. The total number of presidents that the US has had if you count the current one is 44.
none
Obama is the 44th.
According to history, We have never had any president be in the marines. We have had many be in other branchs.
As many as they want
No US president is known to have had epilepsy.
Around15
Certainly! There are many Vice-Presidents that have served as President, both because of the death of a president and because they were elected.
The US constitution limits a US president to serving two terms in office.
20
Obama is number 44.
2 maximum
4