From the Document: "On October 28, 2020, President Donald Trump issued the Presidential Determination setting the FY2021 refugee ceiling at 15,000. The refugee ceiling is the maximum number of refugees that can be admitted to the United States in a given fiscal year. The Presidential Determination is typically issued before the start, or in the first week, of a new fiscal year. Refugees cannot be admitted to the United States until the Presidential Determination for that fiscal year has been issued. From October 1, 2020, until the issuance of the FY2021 Presidential Determination, no refugees could be admitted to the United States. The FY2021 refugee ceiling is the lowest in the 40-year history of the U.S. Refugee Admissions Program (USRAP)."
CRS Insight, IN11529
Congressional Research Service: https://crsreports.congress.gov/