5th Wheel Deduction

I have a 2014 5th Wheel RV which I've used as a deduction since I bought it new I was told the new tax law changed the definition of Rv's eligible for deduction to motorized only. Is this true? Since I've been using the RV as a deduction can I continue? I was also told that the RV industry is trying to get the definition changed, is that also true?