Did a Postal Worker Witness Ballot Tampering in Pennsylvania?

Two days after the election, a postal worker from Erie, Pennsylvania, claimed in a video published by Project Veritas that his superiors instructed postal workers to backdate ballots that were sent after Election Day. The alleged goal: Make late ballots eligible to be counted in the official Pennsylvania tally. The Trump campaign raised the issue with Senate Judiciary Committee Chairman Lindsey Graham, who passed it along to the Justice Department as evidence of widespread voter fraud in the presidential election.

Then, on November 10, Democrats on the House Committee on...