But the mail states "MEDICAL EXAMS AND POLICE CLEARANCES: This is relevant only if specifically requested and not already provided. If you must provide these documents, be sure to complete your medical exams and submit your police clearances either AT THE SAME TIME or BEFORE you submit your passport." Thus, if you had already provided one before getting a passport request, there is no need to go get another one.
That is my own understanding of that statement and i am not sure if there is any hidden meaning to it.