Homeland Security Secretary Kristi Noem has said she will recommend a travel ban on several countries which she claims are "flooding" the US with criminal activity.

Writing on social media on Monday, Noem said she had met President Donald Trump and decided to suggest "a full travel ban on every damn country that's been flooding our nation with killers, leeches, and entitlement junkies''.

Trump and the Department of Homeland Security (DHS) then shared Noem's post on their respective official social media accounts.

It is not yet clear which countries the proposed travel ban would impact, or when it could begin. The BBC has requested comment from the DHS.

White House press secretary Karoline Leavitt told Fox News on Monday evening that Trump had announced a travel ban several months ago on "third world and failed state" countries, and that Noem's recommendation would "widen" that to encompass more nations.