President Trump is continuing to defend Postmaster General Louis DeJoy’s changes to the U.S. Postal Service, which are resulting in mail delays, but says he can’t speak to the specifics of what DeJoy has done since taking office in June.

“He’s a fantastic man. He wants to make the post office great again,” Trump said during a news briefing at his private golf resort in Bedminster, N.J., on Saturday night.

Dejoy, a former logistics executive and major Republican campaign donor, banned postal workers from making extra trips to ensure on-time mail delivery and cracked down on overtime hours. Localities across the country have struggled with USPS backlogs of up to a week.

Former vice president Joe Biden and his running mate, Sen. Kamala D. Harris (D-Calif.), meanwhile, are preparing for a mostly-virtual Democratic National Convention that kicks off Monday night. A Washington Post-ABC News poll released Sunday finds most Americans approve of Harris’s selection as a vice presidential running mate by presumptive Democratic nominee Biden. The Post-ABC poll finds 54 percent of Americans approve of Biden’s choice of Harris while 29 percent disapprove and 17 percent have no opinion.

Here are some significant developments: