If you have nothing to hide... is like, I'm not a doctor but I play one on TV...totally irrelevant to the argument and the situation when these sayings are most often used.
MY info, MY data, MY DNA, MY iris scan, MY bank balance, MY retailer of choice, MY movements in a free society should remain mine. Whether I choose to share them with MY Govt. or some other Govt or entity, should be MY choice.
If entry into the USA requires the submission of MY biometric data, I can choose to go or not. If travel to the DR requires such data and I choose to submit it, this should not automatically be seen as MY tactic permission for the DR use my data for purposes other than that for which it was collected. Unless specifically notified at the time I voluntarily give MY data that it will be given to other parties, it cannot be said that I have given my informed consent to do so. I may have in the past made deliberate decisions not to travel to the USA because I do not want that country to have my biometric data. To get access to it via a back door route negates my free choice, diminishes my freedom and tramples all over my rights as the owner of the data.
If subsequently asked if I agree to MY data being used for a purpose other than what I have previously agreed to, there must be an option for me to decline such a request without penalty.
Just MY opinion on the ownership of MY face, MY fingerprints, MY eyes.
I think you have residency. I remember when I first applied for and/or got my residency here, I signed something that agrees to do, and not to do, certain things. The only one I remember is that I agreed not to participate in insurrections in the DR. I only saw that document once and I have not seen it since in two renewals. It could be that I also agreed that the JCE can share my information. It would be an interesting exercise to find out what we did agree to : ) It doesn't matter much to me, I try to tell the truth always - in regards to my coming and going to and from US and DR. Much easier.