The report released on Thursday indicated that the Biden administration is growing increasingly frustrated with European allies for their delays in formulating a plan to use earnings from frozen sovereign Russian assets to aid Ukraine.
There are concerns mounting that Russian forces could make major gains in Ukraine in the coming weeks, the report noted.
US officials said "there is no Plan B” for the United States to help Ukraine aside from the $60 billion in military aid included in the Senate-passed supplemental bill, the report said.
Earlier this week, House Speaker Mike Johnson told reporters that he and his colleagues are still reviewing different options to potentially tackle the Ukraine aid issue.
GOP Congresswoman Marjorie Taylor Greene and other Republican hardliners have threatened to move forward on a motion to oust Johnson from his position as House Speaker if they are displeased with his handling of funding for Ukraine.
The United States has been unable to provide Ukraine with significant security packages since funding dried up in late December.