Which office oversees immigration removal proceedings?

The Executive Office of Immigration Review (EOIR) is the correct answer because it is specifically tasked with adjudicating immigration removal proceedings. This office is part of the U.S. Department of Justice and oversees the immigration courts where these proceedings occur. EOIR's primary function is to interpret and apply immigration laws, making determinations on issues such as deportation, asylum, and other matters related to immigration status. By facilitating these hearings and providing judges to oversee cases, EOIR plays a central role in immigration enforcement and legal processes concerning removal.

In contrast, while the Department of Homeland Security (DHS) is responsible for immigration enforcement and administration of immigration laws, it does not oversee the actual judicial proceedings associated with removal. The Office of Immigration Services is focused primarily on providing assistance and guidance for those seeking to navigate the immigration process rather than handling judicial processes. The Department of Justice (DOJ) encompasses EOIR but is broader in scope, covering various legal issues beyond just immigration. Therefore, EOIR is the designated body for handling immigration removal proceedings.