The supreme court in 1993 upheld the right of the government to intercept and return refugees to

to their homeland without asylum hearings.

The Refugees in this case were from Haiti. This decision can be considered to be in contrast to the United NAtions treaty on refugees whereby Countries are obliged to refrain from forcibly returning people to territories where their lives might be endangered

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)

“i think it is very plausible that if there are five votes to end the death penalty, it could be with the people who are on the court right now,” - smith

so basically it is not clearly and consistently imposed