"What we've seen in a way that is unique to modern political history is a president who is explicit in trying to discourage people from voting," Obama said during an appearance on his former campaign adviser David Plouffe's podcast on Friday. "What we've never seen before is a president say, 'I'm going to try to actively kneecap the postal service to encourage voting and I will be explicit about the reason I'm doing it.'"
He added, "That's sort of unheard of."
The unfounded accusation was immediately amplified by the media, and the conspiracy theory took hold on social media. Even pop music singer Taylor Swift parroted the unsubstantiated allegation.
A photo from Portland of a truck with several USPS mailboxes in the bed went viral last week.
Presumptive Democratic presidential nominee Joe Biden embraced the conspiracy theory that mailboxes were being collected in Portland as a form of voter suppression for the election in November.
"They're going around literally with tractor trailers picking up mailboxes," Biden said at a virtual fundraiser. "You oughta go online and check out what they're doing in Oregon. I mean, it's bizarre!"
USPS spokeswoman Kimberly Frum told The Hill that the removal of mailboxes is common.