President Trump reposted a fake video showing former President Barack Obama being arrested in the Oval Office, as Trump administration officials continue to accuse Mr. Obama of trying to harm Mr. Trump’s campaign during the 2016 election, and the president seeks to redirect conversation from the Epstein files. The short video, which appears to have been generated by artificial intelligence and posted on TikTok before being reposted on Mr. Trump’s Truth Social account on Sunday, comes days after the Office of the Director of National Intelligence issued the latest in a series of reports from the Trump administration trying to...