Kristi Noem, President-elect Donald Trump's nominee to lead the Department of Homeland Security (DHS), vowed at her Senate confirmation hearing to lead a crackdown on immigration by securing the "war zone" at the US-Mexico border and deporting unauthorised migrants.

So far, Kristi Noem appears to have strong backing from GOP senators who will be crucial to her confirmation as head of the Department of Homeland Security.

Kristi Noem's hearing on Jan. 17 will end the first week of hearings to determine whether senators will confirm Donald Trump's Cabinet nominees.