EXCLUSIVE — Arrests and deportations of illegal immigrants have soared to all-time highs in President Donald Trump’s second term, but the administration has faced significant hurdles maintaining its momentum in recent months, according to White House border czar Tom Homan, prompting some concerns from Trump’s base that his administration is abandoning promised mass deportations.

Approximately 641,000 illegal immigrants have been arrested by Immigration and Customs Enforcement and federal partners in 16 months, while more than 800,000 have been removed from the United States, Homan explained in a lengthy interview with the Washington Examiner at the White House complex this week.