Who was the presdient of the National Bank?

Answer 1

I assume you are referring to the President of the SECOND Bank of the United States, which lasted from 1816 (under Madison) to 1841 (after failing to be re-chartered under Andrew Jackson). This bank was run by three presidents:

William Jackson (1816-19)
Langdon Cheeves (1819-22)
Nicholas Biddle (1822-41)

Actually, few people are even aware of the first two. Biddle is quite well known not only because of his great success with the bank, but for his great clash with Andrew Jackson, a fierce opponent of the bank who finally accomplished its demise. So if this question has only one person in mind, it is almost certainly Biddle.

http://columbia.thefreedictionary.com/Bank+of+the+United+States
http://en.wikipedia.org/wiki/Second_Bank_of_the_United_States
http://en.wikipedia.org/wiki/Nicholas_Biddle_%28banker%29#The_Bank_of_the_United_States

Note that there was also a FIRST Bank of the United States from 1791-1811, chartered through the efforts of the first Secretary of the Treasury, Alexander Hamilton (he was NOT its president!)
http://en.wikipedia.org/wiki/First_Bank_of_the_United_States

Answer 2

Alexander Hamilton was the strongest advocate of it... although it's a super complicated issue because they fought about it in the government a TON.

The easy answer is Hamilton... and his opposition was Thomas Jefferson. Hamilton was a Federalist, who wanted big government and lots of federal control. Jefferson was an AntiFederalist, who favored less government involvement to let the people rule.

Good luck.