One of the main purposes of the APMSA is to represent student opinion.  If their ability to do this is compromised in any way, then yes, it  loses its ability to act as the student voice and it becomes a  mouthpiece for another organization. Many other organizations are  autonomous for important reasons: NBPME, CPME, AACPM, the Deans, each  school, etc. They have meetings where they can interact with other  organizations and get their input, and then they try to fulfill their  mission as they see best. The student organization (APMSA) can't dictate that other organizations do this or that, but reminds and encourages incessantly at issues that cannot be ignored like the residency shortage (which would be much worse if other organizations would have been content to just say "oh it will all work out, there won't be a shortage, etc" as they have). Student representatives also take back the information from their meetings to their schools via emails, publications, orally, website, etc. If the student representatives were unable to represent student interests in an unbiased way, they would simply be leading the campaigns for agendas of other organizations, and not filling their mission of representing the students. 
Currently, the APMA offers students many free perks as a gesture of  goodwill and to provide a sample of what they offer the DPM after  graduation. The APMA plays many important roles on a national and state  level. They offer students free access to their website that has lots of  useful information on scope of practice, legislative action, public  relations initiatives, and links and information about many affiliated  organizations and issues that affect the profession. They offer students  free subscriptions to JAPMA and APMA News and other benefits as  students. The APMA tries to allow students the resources to become  educated on all the aspects of the profession they may be interested in.  What they do is excellent, and it allows students to see what the APMA  offers so that they can become members after graduation if they desire.  They have offered this "student membership" free of charge for a while,  and it works well - students get information and the APMA gets to  showcase some of what it offers DPM members. 
The "merger" issue was presented at the very end of the APMSA house of  delegates meeting and it was attempted to rush it through. It was said  that if it was not passed, the APMA would withdraw it. It was also  stated that if it didn't pass, the APMA might retract all those benefits  they offer students now. The student house voted against adopting it  because it was vague and there wasn't enough time to get student opinion  on the matter. The vagueness was particularly concerning - what  prompted this and why is it so urgent and so monumental? What would be  the implications of the change? Would students have to pay dues to APMA?  If the entire student body population from all 9 schools were grafted  in, would they get equal representation as other DPM's (1 vote for every  100 members), and would they be able to represent students or would  their population just count toward the membership of the states where  their schools are (which would do nothing for student interests)? There  were many vague points that were not clarified and the attempts were  made to rush it through. The student house voted against it and if it  wants to be addressed again, it can come up at the next house meeting. 
That was not good enough though. Immediately afterward, the APMA  informed the APMSA that their initiative could not be retracted (why?)  as they had stated before and began contacting individual delegates,  alternates, and class presidents. I will not comment on specific tactics  that they are using but I wonder why these things cannot be done  openly, in session, or even in writing? If this has been something on  the APMA agenda for over a year, why wait till the 11th hour and 59th  minute? Why corner individual students and use inappropriate and  unprofessional tactics? 
Perhaps to get at the issue, the question should be why now does the  APMA want students to become "official" members? Is there some other  external issue involved? Why don't they provide details? Why don't they  provide specifics in what the new grafted membership would entail? Why  wouldn't they allow the same equal representation for students if they  were supposedly full members? Why the hints of taking away all the  benefits that the APMA offers? They say that autonomy of the student  organization will not be compromised, and that students would be full  members, but their current actions are not consistent with this  statement. 
The APMA does a lot of good work for the profession and for students as  well that is commendable and laudable. I personally plan on being a  member after I graduate and finish residency. But this particular issue  is so convoluted and abnormal, that it deserves proper investigation  into the motives and ramifications before moving forward on it. All  things should be done with due process and with all the facts presented.  
This is an APMA initiative that they have proposed and are trying to  rush through. The onus is on them to provide the specifics and details  about why this would benefit students enough to make students vote to  merge with them. So far, I am not convinced that there is any reason to  make the change, and I see many concerning reasons to tread carefully. 
The purpose of this post was to get students to discuss these issues  with their student representatives. For this reason I have not stated  other things that would be out of line. I simply encourage students to  discuss this issue with their delegates/student body presidents, and for  the APMA to put their motives and justifications in writing, and be  open and professional about their interactions with potential future  colleagues.