Trump's campaign is playing down reports of an altercation during his visit to Arlington National Cemetery on Monday, a move that signals its concern about potential political fallout from the incident.
It took only two weeks for the vice president to erase Donald Trump's polling lead, but there are some doubts that the excitement fueling her rise will endure through election day.
The president's allies see his decision as proof of his selfless devotion to the country. His critics view it as the ultimate admission of his failures.
