Rosie O'Donnell reignites her decades-long feud with Donald Trump during her Jimmy Kimmel Live! guest-hosting stint, unveiling the nickname “President Petty Roosevelt” and dragging White House aide Natalie Harp into her latest monologue. From “Mango Mussolini” to “Oompa J. Loompa,” O'Donnell has turned her return to late-night television into a fresh round of attacks on Trump, reviving a rivalry that dates back to 2006.