On this my answer would be.... "Yes and No"
I would gear it more towards North Carolina's current laws regarding being intoxicated in public as they have laws against that when dealing with alcohol already. Actions that are taken "in public" while under the influence of an formerly illegal drug would then fall under the same statues as those that are already in place when dealing with drunk and disruptive people. However, on the same note, when something happens within the boundaries of a private residence, the factor of substance impairment shouldn't add additional charges. Although, I would think that their status of impairment should have SOME aggravating factors when dealing with an assault, depending on the severity of injuries to the victim. And of course, the problem with adding additional penalties based upon impairment from a substance would be the burden of proof placed upon the State. As alcohol is easily detected, some abused substances are not so easily identified if they have no odor, or there is no direct evidence of paraphernalia used in the consumption of a specific drug. Of course, there is blood testing but that process takes quite some time, and the labs would be over burdened by the increase in requests that such a law may create. Thus my concern for additional funding for blood labs when dealing with impaired driving cases if present day controlled substances were to become fully legal. As, with our current system not nearly as many impaired driving cases deal with those impaired by controlled substances (with absolutely no alcohol to factor in), there would be a HUGE increase in this if it were to become fully legal. Because, whether anyone wants to believe it or not, it is this Officer's opinion that there are many out there who are deterred from using these substances due to the current laws, adding to that, that the due to these laws, the substances are not easily accessible to someone for experimental use who has no connections (at least in some areas, others are so over-run by drugs that you don't even have to look, they will come to you). My concerns with impaired driving are that with the legalization of all present day controlled substances and the lack of ability to properly test defendants for these substances will create a loophole allowing blitzed folks to run around on the streets slamming into innocent soccer moms, killing them, and getting away with it due to the burden of proof.
Now, in regards to whether or not ANY additional laws or changes in statute allowing for a crime committed under the influence of an impairing substance to constitute a higher level of punishment would deter use of said substances.......No. Its my opinion that it won't deter anyone from doing anything.