Here is the report CNN aired that he as a problem with:
Hasen said the CNN set a “false frame” about voter fraud in this country. He wrote:
They (CNN) quote Trump’s dangerous and irresponsible (and borderline racist) comments about cheating being used to steal the election in Pa, and then when they ask if there is any evidence to support this, they point to a Pew report on bloated voter rolls, AS IF bloated voter rolls prove people are voting 5, 10, or 15 times as Trump has claimed (and as I’ve debunked). And the story sets a false frame, by saying not—this cheating is impossible in this way, but that voter id laws discriminate against minority voters.
In a recent LA Times opinion, Hasen debunked Trump’s statements about needing stricter voter identification laws, explaining:
Trump contends that without strict voter identification laws, people can vote five, 10 or 15 times. He’s offered no evidence to back up this assertion, and for good reason. Even in states with modest means of identifying voters, such as comparing voters’ signatures in the poll ledger and on registration forms, there are safeguards to ensure against multiple voting.
In his blog post, Hasen adds that CNN’s on-air coverage of this issue has been “very disappointing.” He did say CNN’s articles on this and other issues have been better.