BREAKING: KIRSTJEN NIELSEN TO RESIGN FROM DEPARTMENT OF HOMELAND SECURITY.

She will be replaced by Kevin McAleenan, an Obama holdover who, according to the Washington Post late last month, “warned that the U.S. immigration enforcement system along the nation’s southern boundary is at ‘the breaking point’ and said Wednesday that authorities are having to release migrants into the country after cursory background checks because of a crush of asylum-seeking families with children.”

As Twitchy asks, “Exit question: Is he really the best fit at DHS?

Related: Report: Nearly 20 Percent of Inmates in Federal Prisons Are Criminal Aliens.