International Criminal Court – forced pregnancy is a crime under int’l law.

Rome Statute of the International Criminal Court

Sadly, the USA didn’t sign and ratify it. So the ICC can only act as an advisor to the UN.
The ICC may not have actual force they can bring to bear, but that doesn’t mean they don’t have moral weight to ‘discuss’ issues with nations. Their displeasure would be felt.

Article 7

Crimes against humanity

1. For the purpose of this Statute, “crime against humanity” means any of the following acts when committed as
   part of a widespread or systematic attack directed against any civilian population , with knowledge of the attack:
   (a) Murder;
   (b) Extermination;
   (c) Enslavement;
   (d) Deportation or forcible transfer of population;
   (e) Imprisonment or other severe deprivation of physical liberty in violation of fundamental rules of
   international law;
   (f) Torture;

(g) Rape, sexual slavery, enforced prostitution, forced pregnancy, enforced sterilization, or any other form of sexual violence of comparable gravity;

(h) Persecution against any identifiable group or collectivity on political, racial, national, ethnic, cultural, religious,

gender as defined in paragraph 3,

or other grounds that are universally recognized as
impermissible under international law, in connection with any act referred to in this paragraph or any crime within the jurisdiction of the Court;
(i) Enforced disappearance of persons;
(j) The crime of apartheid;

(k) Other inhumane acts of a similar character intentionally causing great suffering, or serious injury to body or to mental or physical health.

This covers Canada as well as the USA, and Canada did sign

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And unlike the USA, Canada is a member of the Commonwealth and participated in helping member nations to codify the Rome Statute into their laws.