As venue is jurisdictional element that does not take the state of mind of the deft into account, venue in a certain district need not be foreseeable by the deft.
Sentence drug calculations upheld.
http://www2.ca3.uscourts.gov/opinarch/172079p.pdf
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.