More than 300 families who lost loved ones to crimes committed by undocumented immigrants are urging Congress to support Senator Markwayne Mullin's nomination for Secretary of Homeland Security, according to advocacy group The American Border Story.

The families, known as Angel Families, argue that Mullin understands the stakes involved in border security and immigration enforcement. Their public endorsement comes as the Senate prepares to consider President Trump's cabinet nominations.

Separately, sources report that the Department of Justice has reduced operations of its Recognition and Accreditation program, which allows non-attorney representatives to assist immigrants with legal needs. The program typically helps lower-income immigrants with services including naturalization petitions and immigration court representation.

The timing of both developments highlights ongoing tensions over immigration policy as the new administration takes office. Angel Families have been vocal advocates for stricter immigration enforcement, while immigrant rights groups have expressed concerns about reduced access to legal assistance.

Mullin, a Republican senator from Oklahoma, has been a strong supporter of enhanced border security measures throughout his congressional career. His nomination for the DHS position requires Senate confirmation.