Claim: Universal mail-in voting has led to widespread voter fraud. Fact check: False

Nine states and Washington, D.C., will mail ballots directly to voters (what is known as universal mail-in voting), accounting for 44 million voters — half of President Trump's claim. Several states, including Colorado, Nevada and Washington have conducted primary elections in which ballots were mailed to all eligible voters. In Nevada some ballots were rejected largely because they were not properly filled out, but there were no reports of widespread voter fraud in those states

The Heritage Foundation, a conservative think tank, is keeping track of voter fraud during the 2020 election. Its database lists 13 cases so far. None occurred in states with universal mail-in voting.