Evan McMullin announced his campaign as an independent presidential candidate Monday morning. He wasted little time before delivering the harshest attacks Republican nominee Donald Trump has been hit with from a rival.

After resigning from his post in the House Republican Conference and stealing the Monday news cycle, McMullin went on ABC’s World News, where he escalated his criticism of Trump to a new level, saying the billionaire businessman’s comments about Khizr Khan’s son indicates “he is inhuman.”