Now, their long-standing feud has escalated after Trump threatened to revoke the comedian's U.S. citizenship months after she fled to Ireland.

“I will never renounce my American citizenship. Ever,” O’Donnell said in a new TikTok video addressing her ongoing feud with Trump.

O’Donnell previously shared that the two had a good relationship prior to becoming famous, but later developed a bit of “weirdness.”