According to court documents, Cory and Felicia Konold were part of a group that stormed the Capitol building on Jan. 6 and tried to stop police from controlling the crowd.
The FBI said video also shows the siblings marching with leaders of the Proud Boys before the riot.
Both are accused of several charges, including conspiracy.
Get breaking news alerts in the FOX 10 News app. It is FREE! Download for Apple iOS or Android.