I've got a NY State Enhanced permit. I cross the border nearly every week, and its just a painintheneck to carry my passport. Forgot it once, and had hours to drive back home.

But I never forget my wallet and permit.

You just need to show proof of citizenship or birth to get the enhanced permit. Thereafter you can renew it on line, you don't need to go back to the DMV to show mugshots.

I believe you can cross the border both ways with your Birth Certificate. Although I never tried it myself.