Different contributor here. I have comprehensive access to WestlawNext(tm). I can conduct a search of the case law for you. However, I have learned over the eight years during which I have answered questions in this forum, that if my case law research returns either a negative or empty result, that the customer rarely, if ever provides a positive rating -- which means that I don't get paid for my time.
I will be happy to conduct a search using my own abilities (which I believe is pretty formidable, given that I have been a researcher for several decades). Or, if you want to choose the keywords, I'll search on your choices. And, if you wish, I will even printout screenshoots of the results, in the event that I cannot find a positive hit.
What I won't do is engage in a 30 minute exercise in futility, followed by a "thanks, ***** ***** thanks" from a customer, because I believe that it's fair that I be paid for my research time.
In short, if you agree to pay, regardless of the results obtained, I will conduct the research. If not, please let me know, and I will reopen the question for others to assist.
Thanks in advance for your understanding and for using Justanswer!