TLDW; punishment can include the death penalty. It’s also a system designed to punish disobedience immediately and only much much later provide an opportunity to prove the orders you disobeyed were unlawful and thus the punishment you already suffered was wrong. That’s a very very high bar to pass as well.
Can they refuse?
No.
Here’s the LegalEagle explaining why.
TLDW; punishment can include the death penalty. It’s also a system designed to punish disobedience immediately and only much much later provide an opportunity to prove the orders you disobeyed were unlawful and thus the punishment you already suffered was wrong. That’s a very very high bar to pass as well.
Boo