From the Document: "The humanitarian situation in Ukraine continues to deteriorate following Russia's invasion on February 24, 2022. Russia's war against Ukraine threatens to trigger a wider humanitarian crisis and has resulted in massive refugee flows to neighboring countries. The U.N. High Commissioner for Refugees (UNHCR) stated [hyperlink] that the war could cause 'Europe's largest refugee crisis this century.' With strong bipartisan support for the humanitarian response, Congress has increased U.S. humanitarian funding for Ukraine (see P.L. 117-103) while considering related challenges such as humanitarian access and protection."
CRS Insight, IN11882
Congressional Research Service: https://crsreports.congress.gov/