Trump pumps fists as he walks out of Walter Reed Medical Center after intensive 3-day treatment for COVID-19; vows to quickly return to campaign trail

American ambassador tells Emirati website that Democrat nominee would undermine efforts of Trump administration to reverse nuclear deal

Experts say 'stunt' broke public health guidelines requiring patients to isolate while they are in treatment and still shedding virus, and endangered Secret Service protection

In video, Trump describes experience: 'This is the real school. This isn't the let's read the books school, and I get it, and I understand it, and it's a very interesting thing'

Immigration lawyers in Canada and the EU see citizenship applications rising exponentially; while this may be common in election years, the proportion of Jewish applicants is not

A look at the complications that would arise should one of the presidential nominees be forced out of the running

At 74, president's age would be the primary risk factor, says infectious disease expert; Trump's also obese, with a BMI over 30, which lowers immunity to virus

White House doctor says president received experimental antibody treatment, is in good spirits; but grounding of reelection effort comes at worst possible time

US president's positive COVID test shifts election focus to White House's handling of pandemic; quarantine prevents Trump appearing at the large rallies that fuel his campaign

'I hope this serves as a reminder,' Democratic presidential candidate says. 'Wear a mask, keep social distance and wash your hands'