What you need to know about Sen. Markwayne Mullin, Trump's new pick to lead DHS

Sen. Markwayne Mullin, R-Okla. spoke with reporters at the Capitol on Thursday. President Trump announced that Mullin is his pick to replace Kristi Noem as the head of the Department of Homeland Security.

President Trump announced Thursday that Sen. Markwayne Mullin, R-Okla., is his pick to replace Kristi Noem as the head of the Department of Homeland Security.

(Image credit: Anna Moneymaker)