He is paid by the US treasury. I would guess the US treasurer's stamped signature appears on it. It is quite likely that his checks are deposited electronically into his account.
The amount of money that a president makes is set by Congress. The president's paycheck is processed and comes from the US Treasury.
1100
47.
Abraham Lincoln
President Obama doesn't have a son.
Senator.
Joe Biden
Michelle Obama
Come Help A N!gga Get Elected
Ann Dunham
He is President-Elect Obamas senior advisor.
The United States Constitution approves the president's paycheck. The United States Secretary of Treasury Tim Gietner is guessed to actually sign the check.