Many folks get arrested but it is only when one is found guilty that a real problem exists if it is a moral turpitude matter.
Basically the US dont accept travellers who come under the MT rule and that has been in place since before I started travelling to the US over 3 decades ago.
You do get a chance for review through the channel described but it seems to be a pretty low priority in the scheme of getting waivers.
If you have a moral turpitude conviction do not buy a non refundable ticket as there is no sense of haste with our US buddies.
If you can find your criminal record then so can the US authorities.
I dont have a criminal record or conviction to to find!
I do have one arrest and although it leads to nothing it is unfortunate for me that it is a mortal turpitude arrest.
Because i have no criminal record I dont know how to go about finding a 16 year old arrest paperwork or court preliminary hearing paperwork.
For those who dont know what a court preliminary hearing is,its a hearing to see if you have any founded charges to face in the first place before it gets to court.