A Rosedale, Md., Ku Klux Klan group has announced that it will hold a rally at Antietam National Battlefield on Sept. 7 to protest U.S. immigration policies and President Obama’s administration. Nine members are expected to attend, some wearing robes, according to news stories.

The group received a permit last week to hold its rally near the Mumma Farm, a historic site visible from the visitors’ center. The park implemented free-speech permits in 2006, the last time a KKK group demonstrated at the battlefield.

The group’s leader, Imperial Wizard Richard Preston, told reporters he plans to stage a similar event at Gettysburg National Military Park but he has not yet submitted an application.