Alongside other prominent figures such as Kofi Annan and Javier Solana, Caspers-Merk served on the Global Commission on Drug Policy which advocates reforms in drug policies towards the regulation of all substances.
Caspers-Merk was part of a group that included prominent individuals such as Kofi Annan and Javier Solana when they formed the Global Commission on Drug Policy. This commission promotes changes in drug policies to regulate all types of drugs.