"Thank you for your letters of February 15, 2017, April 3, 2017, and May 8, 2017. I was pleased to read that you share my concern for public health and safety and my belief that the federal and state governments should work together to address our country’s concerns with marijuana."

Mr Ferguson.  I implore you to study your British history and the Federal Constitution that was born from it.  You clearly have no understanding of these things.  On the one hand you claim state ritghts, but on the other you claim the Federal Government should have input into how states exercise those rights.  

So which is it?  You either believe in states rights or you do not?   Negotiating our states rights is not exercising our rights, but the opposite of that.  And the last time I checked, the Federal Government was not a Kingdom in which we must seek council to do our internal affairs.