Another friends and jail situation

[RustedCorpse]

Summary: Can a friend mailing you something result in your prosecution?

So my friend apparently decided to send me a random early Christmas gift in harvested plant form. When speaking to me I requested that he mail the product through Fed Ex or UPS, as I really like to avoid pissing off, or otherwise involving federal facilities.

Typical of most pothead friends, he ignored my advice and sent it first class through the United States Postal system over a week ago. The length of time involved and method of shipping leads me to believe that there may have be some delays

My question, if anyone knows anything about this, can I get in trouble for this? Arguably I never requested the transaction, have not been involved with it at any point, so if I walk in to pick up this box and Big brother is there to grab me, can I just deny everything? I don’t really understand how I can be held accountable, however the long delay in the arrival of the package leads me to wonder.