White House budget director Shalanda Young warned in a letter to Republican House Speaker Mike Johnson and other congressional leaders on Monday that the United States was running out of time and money to help Ukraine fight its war with Russia.
President Joe Biden's administration in October asked Congress for nearly $106 billion to fund ambitious plans for Ukraine, Israel and US border security.
Republicans control the House of Representatives with a slim majority, and funding for Ukraine has become politically controversial with some right-leaning lawmakers.
Young said in a letter released by the White House that cutting off funding and a flow of weapons to Ukraine would increase the likelihood of Russian victories.
Russia launched 23 drones and a cruise missile overnight on Ukraine, Ukraine's air force said on Monday, adding that its air defense systems destroyed the missile and 18 of the drones before they reached their targets.
Anti-aircraft defense was deployed in at least 9 regions of Ukraine, the air force said on the Telegram messaging app.
Reuters could not independently verify the report.
The air force did not provide details on what happened to the drones that were not destroyed or whether there was any damage in result of the attack.