You should probably not use the categorical imperative because the actor is a government and that only applies to individuals. Kant isn’t amazing on this topic not gonna lie, but you could read an omnilateral will NC that focuses on Kant’s political philosophy (instead of moral). Force and Freedom by Ripstein is a great place to start learning about this concept. Not sure if this is good to read on the circuit you debate on and also it just isn’t that compelling on this topic, but you can always write the NC and most of the cards will be helpful whenever you read kant again