Article continues below advertisementDonald Trump went off on a tangent about voters needing to provide ID in his latest address amid persistent dementia rumors. The president, 79, rambled, saying, "All we want is voter ID...You go to a grocery store, you have to give ID, you go to gas station, you give ID...but for voting, they want no voter ID."He continued, "It's only for one reason - because they cheat," before declaring, "Mail-in ballots make it automatically corrupt."Article continues below advertisementSource: megaDonald Trump says you have to show ID at the grocery store.