Donald Trump said the U.S. has shocking weaknesses in voting safety before a big speech.
He claims China tampered with the 2020 vote, saying the result was unfair.
He now plans to audit more gaps ahead of the next midterms elections.
Trump also warned TV stations to air his speech live or risk losing their permits.
His talk will push voter fraud stories, not healthcare or other big issues.
Trump keeps saying votes were stolen, though courts tossed every claim for lack of proof.
He repeats the allegation frequently in interviews.