After assuming the post in late 2017, Ms. Nielsen led the department during the administration’s “zero tolerance” policy along the Mexican border, which initially resulted in the separation of thousands of migrant children from their families.

What’s next: Mr. Trump named Kevin McAleenan, the commissioner of Customs and Border Protection, as acting secretary. In announcing a recent spike in the number of illegal border crossings, Mr. McAleenan said last month, “This is clearly both a border security and a humanitarian crisis.”

Catch up: On Friday, Mr. Trump withdrew his nominee to run Immigration and Customs Enforcement, Ronald Vitiello, saying he wanted the agency to go in a “tougher” direction.

West Bank’s future is now on Israeli ballot

Fighting for survival before parliamentary elections, Prime Minister Benjamin Netanyahu unexpectedly promised over the weekend to begin extending sovereignty over the West Bank if he is re-elected.