Vice President Kamala Harris and former president Donald Trump are set to face off in Philadelphia on Tuesday night in their first — and perhaps only — presidential debate of a compressed campaign. The 90-minute debate is scheduled to start at 9 p.

During a pre-debate prayer call hosted by the National Faith Advisory Board on Monday evening, Trump whined that Kamala Harris wanted to naturalize undocumented immigrants, and claimed that it would come at a steep cost to one group in particular.