Source: Elines 

The short answer, of course, is no.  

With the legalization of cannabis in a growing number of the United States, there have been a number of cases where people have mistakenly believed they are able to legally purchase the substance in one state and then carry it across state lines to their home for consumption, even if their home state also permits the legal sale/purchase.

Federal law prohibits transporting any federally restricted substance across state lines, and cannabis clocks in at Schedule I on the Controlled Substances Act, alongside the likes of heroin and LSD. 

“You’re still, by crossing the state lines, falling within the jurisdiction of the federal government. Even if cannabis is legal in both states, it’s that crossing of the border that puts you at risk.”  - Alison Malsbury, Canna Law Group attorney