Ok, I've researched this ad-nauseum online...
...all that's required is an ID/Driver's License for US Citizens, correct? My parents are freaking out last minute after being told they'll also need an Original Birth Certficate, which they do not have and won't be able to procure before my wedding in 2 weeks.
I HAVE read that on occasion US Customs can be a pain or testy about it, but that's it's not technically required, and you can re-enter with your Driver's License as a US Citizen.
Is this correct?