Amendment X: "The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
What I find remarkable is that Dr. Keyes does not make reference to any constitutional provision as a source of Federal power for the statute (Controlled Substances Act) and then doesn't even concern himself with the particular language of the statute.
Instead, he apparently thinks it enough that the U.S. Government is protecting the "unalienable" right to life that is described in the Declaration of Independence. That approach may work for him today on this issue, but he might find it troublesome if others were to view the U.S. Government's power to include the protection of the "unalienable" "pursuit of Happiness" that is also in the Declaration of Independence. This Declaration of Independence approach to the scope of Federal power is way beyond both FDR and Roe v. Wade.
Thankfully, however, the Fifth Amendment prohibits everyone, including the states, from taking life, liberty, and property without due process of law.
The purpose of government, as the Declaration states and as our Founders believed, is to protect these rights--which rights must be considered unalienable to all persons. Alan Keyes argues that you cannot give away unalienable rights, even if you don’t want them. (see Keyes’ speech at Missouri Right To Life)
Once the right to life fails to be protected by law, even in the circumstance of assisted suicide, eventually no one will be safe.
Ever hear of "life, liberty, and the pusuit of happiness"? Look it up. It's in that lovely document that you claim to know so well.
I think the topic here is "life".