Rep. Marjorie Taylor Greene (R-GA) on Thursday slammed Vice President Kamala Harris, who most expect might be the next in line if President Joe Biden chooses to step down from his presidential campaign, saying Harris is a liar. Greene chose to target Harris based on a conspiracy theory that the current V.P. has been covering up for Biden’s ailing health. “Of all the people that work close to Joe Biden, as VP, Kamala Harris is the closest and she never told the American people how bad Joe Biden is cognitively impaired,” the lawmaker wrote. “She is perhaps the biggest of all liars.” Want more br…