A recent decision by the Constitutional Court in the Dominican Republic effectively clears the way for officials to retroactively strip the citizenship of tens of thousands of Dominicans of Haitian descent. The ruling — that children born to Haitian immigrants are essentially foreigners in the country of their birth — is arbitrary and unjust, and could potentially create one of the largest groups of stateless people in recent years.

Until recently, "birthright citizenship" was an established part of Dominican law, meaning that anyone born in the country was automatically eligible to be a citizen. That included children born to Haitian migrants who had come into the country illegally or as guest laborers to work in the Dominican sugar plantations, or to clean houses or to join construction crews.

Theoretically, some of the victims of this unjust new rule might qualify for Haitian citizenship. But many have never set foot in Haiti and don't even speak French or Haitian Creole. Some might find that the records needed to prove their eligibility are missing or were destroyed in the 2010 earthquake.

The Constitutional Court's decision — which follows many years of resentment and mistreatment of Haitians, who have come to the Dominican Republic by the thousands to do the country's hardest and lowest-paid work — has outraged human rights groups and raised concern in the United Nations. It has needlessly and tragically created a humanitarian crisis where none existed. There is still time, however, for the international community to urge Dominican officials to exercise restraint as they review thousands of birth records. At the very least, they should provide legal status to those they strip of citizenship.