"As a point of clarification, there will be current Motorcycle police attending from just about all states and will form part of the convoy from your State and there is no longer a requirement to "be invited". "
Unfortunately this statement is not entirely accurate.
(From the official website) Registration is open to the entire policing family - current serving sworn and unsworn, retired police, emergency services officers, as well as friends and family members.
Not all states will be sending their motorcycles.
If you are associated with any of these groups, then please get involved.