Sasha and Malia, we were seven when our beloved grandfather was sworn in as the 41st President of the United States. We stood proudly on the platform, our tiny hands icicles, as we lived history. We listened intently to the words spoken on Inauguration Day service, duty, honor. But being seven, we didn't quite understand the gravity of the position our Grandfather was committing to. We watched as the bands marched by -- the red, white, and blue streamers welcoming us to a new role: the family members of a President.

We also...