WASHINGTON (AP) — At least 50,000 Afghans are expected to be admitted into the United States following the fall of Kabul as part of an "enduring commitment" to help people who aided the American war effort and others who are particularly vulnerable under Taliban rule, the secretary of homeland security said Friday.

Tens of thousands of Afghans have already made it through security vetting and arrived in the U.S. to begin the process of resettlement. Exactly how many more will come and how long it will take remain open questions, DHS Secretary Alejandro Mayorkas said as he outlined the effort....