Pro-Palestine protests have strongly intensified at universities across the US in recent days.
It's evoking memories of the killing of George Floyd in 2020.
The US Secret Service said it was a medical matter, without elaborating further.
"We're writing a rule for the ages," conservative Justice Neil Gorsuch, said during the arguments.
He is not expected to be freed immediately, as he also faces a separate 16-year prison term in California after being convicted there last year for the 2013 rape of an actress at a Los Angeles hotel.
According to a US official, Ukraine has used the missiles twice.
Researchers are still trying to figure out how the virus is spreading between animals.
"We paid for stories."
The former US President's criminal trial is in its first day.