Republicans launch investigation into possible impeachment of DHS Secretary Mayorkas.

House Republicans have launched a formal investigation into Homeland Security Secretary Alejandro Mayorkas' "dereliction of duty" and are considering impeachment. Homeland Security Chairman Mark Green accused Mayorkas of lying to Congress and failing to secure the border, violating at least 10 U.S. laws. The investigation is expected to take 11-12 weeks, and the findings will be handed over to the Judiciary Committee, which will decide whether to pursue impeachment. Republicans blame Mayorkas for the surge of migrants at the southern border and the undoing of previous administrations' policies.