Three supply chain orgs you can join (ISMworld.org for $35 & CSCMP.org for $40 & ASCM.org for free!)
I would highly encourage you to join organizations related to what you are majoring in. Send the message to employers that you plan on being an engaged member of your discipline. Also, these organizations have certifications which can be used to externally validate you as a subject matter expert in Supply Chain Management. Send the message to employers that you are aware of these certifications and these certifications are a...