How can i convince my dad to let me travel to america alone? help!?

soooo Ive lived in the us like most of my life and i have really good friends and a really good life there... but last year we moved to europe... and we were supposed to come this summer but my dad had a change of plans but i don't like changes!! sooo ive been thinking to convince him.. hence the question... my friend offered me a place to stay and i have the money ... And i know my way around .. ive traveled a lot be4 but its been always with a grownup... im 16.. plus im already traveling on my own for college... soooo any ideas??