she isn't
no
He needed to go to a debate at the Whitehouse.
It could be either. "Pres" is an abbreviation for "President." Although you should probably use a period at the end of "Pres." like shown.
Natasha Obama was born on June 10, 2001. She is 10 years old. The family's friend Dr. Anita Blanchard delivered both of the Obama's children at the university of Chicago Medical Center.