Potential Consequences If the sates were to have the power to control dangerous substances they would get to vote on it all and it could lead to legalization of more drugs such as cocaine, heroin, and meth.
Federalism gives the national government implied powers such as the elastic clause. The national government also has the commerce clause that states they have to power to control commerce.
Federalism also hinders our claim because since there is nothing about drugs in the constitution the states could say it is a reserved power not given to the national government.