state some reasons?

Question

do you agree that it is less risky and cheaper for you to grow pot on US soil or to drug traffic it across the border..econ question

Answer 1

Since domestic production is thought to be increasing economic reasoning would lead to the conclusion that it is less risky and/or cheaper.
http://www.usdoj.gov/ndic/pubs25/25921/marijuan.htm#Top

Answer 2

It is less risky and cheaper to keep pot off the streets.

Pot users are a danger to themselves and others, not to mention the burden on public health & welfare programs.