"It's not only about money that help Russia wage its war, but it's also a big signal to Europe, Ukraine, and our people, so I'm very thankful," President Volodymyr Zelensky said.

One of the aides said the Senate was also expected to begin voting during Zelensky's visit on a bill to impose sanctions on Russia that was championed by Graham.

With the US Congress poised to vote on a Russian sanctions package, Zelensky’s visit could signal a turning point.