From the AP:
Does this give death penalty opponents a new avenue to pursue, higher tariffs on lethal injection drugs, to make the process more expensive?
And note the reference to "equivalence" in the last quoted paragraph. I don't think the SPS Agreement (and its Article 4 provisions on equivalence) would apply here, but similar issues could arise under other agreements if the sale of foreign products is not allowed.
And by the way, I fully expect this to be my first, last, and only post on the death penalty.