Changes to hiring and retention practices grew the department by 19,000 people in four years. But former officials warn ...

"That's one of the biggest problems that has plagued all immigration agencies for as long as I've been in the government," said Michael ... Knowles, whose union role represents DHS asylum officers ...

Knowles, whose union role represents DHS asylum officers within USCIS ... that staffing issues have been a longtime problem. Here's Michael Knowles, who since 2000 has been a local president ...