[agere_contra]

That's right. For instance: according to canon law, a person who procures a completed abortion automatically excommunicates himself.

Pro-abortion politicians may not have explicitly procured an abortion, but in a way they may have helped to procure thousands of them.

This is why clergy say 'risk excommunication' - because the language of Latae_sententiae doesn't say 'pro-abortionist politician' - it says 'procure an abortion'.

[agere_contra]

Sorry, I should have added In my opinion this is why clergy say 'risk excommunication'