https://www.aclu.org/sites/default/files/field_document/stay_order_-_filed.pdf
"Wherefore, it is hereby ordered that the respondents, their officers, agents, servants, employees, attorneys, and all members and persons acting in concert or participation with them, from the date of this Order, are
Enjoined and Restrained from, in any manner or by any means, removing individuals with refugee applications approved by U.S. Citizenship and Immigration Services as part of the U.S. Refugee Admissions Program, holders of valid immigrant and non-immigrant visas, and other individuals from Iraq, Syria, Iran, Sudan, Libya, Somalia, and Yemen legally authorized to enter the United States."
People who have already been authorized to be able to enter the United States legally can't be sent back. The stay is temporary, but the Court will revisit this later.