OC's wanted

When a portal on Earth appears and a horde of Grimm go through it which led to a very bloody attack on New York city with nearly 20,000 people dead. After the Horde is dealt with the U.S. Government authorizes the Military to enter the portal and scout the area. The location the portal leads to is a small island continent known as Menagerie. How will the Faunus of Menagerie react to this new development and how will the rest of Remnant react as well?