You can certainly file suit challenging this new law. I have responded to a number of queries concerning this law recently and I believe that it will be challenged soon. I agree with you that it appears that it may violate the FDCPA.
DISCLAIMER: This answer given is for general information purposes only. No attorney-client relationship exists or is intended. If you have additional questions concerning this matter you may feel free to contact me at the Law Offices of Jacob J. Linhart, P.A., (561) 632-6982 or Jacob@LinhartLaw.com.