One problem that the north had with the boarder states was that they knew that if they lost some of the boarder states to the south, they would be unable to use the Mississippi river to access the south's capital.<span />
Recreational and medical marijuana use is legal in some states, but it is illegal under federal law.
https://www.usa.gov/how-laws-are-made
I found this for ya.
Look at the info graphic and see what you can make of it!