Trump’s own wife Melania has also been the subject of similar conspiracy theories, with the idea that Melania had been replaced by a body double gaining steam during Trump’s first term, prompting the White House to issue a statement dismissing the theories as a “non-story.”

“The prognosis is good,” Biden told reporters during an event on Friday at his home in Delaware.

It was Biden who rushed to the support of Israel and Ukraine after they were attacked, and it was Biden who restored our alliances after the disaster of the first Trump administration.

"Well, the prognosis is good. You know, we're working on everything. It's moving along. So, I feel good," Biden said.