http://time.com/5344265/3d-printed-guns-legal/
I would be surprised if that's not possible for drugs or explosives in 5-10 years.
Edit: Looks like they are already possible or at least on the way:
http://www.sciencemag.org/news/2018/01/you-could-soon-be-man...
https://all3dp.com/custom-shaped-explosives-us-navy-3d-print...
I would very much be surprised if it becomes possible for drugs or explosives any time within my lifetime. Chemistry and physics just don't work that way.
I think google doesn't censor results based on location? So you should see the same results.
Edit: To save your time and avoid polluting your search history:
http://www.sciencemag.org/news/2018/01/you-could-soon-be-man...
https://all3dp.com/custom-shaped-explosives-us-navy-3d-print...
Still, you do need very specific input materials for both processes.
In the case of the latter, you basically need a spool of explosive string. You're not so much printing an explosive as you are shaping an explosive into a desired form. I'm sure it's still very useful, but I don't think it's a particularly big game changer in the "smuggling things into a country" field.