By Patricia Zengerle and Timothy GardnerWASHINGTON, July 28 (Reuters) - The U.S. Senate will begin voting on sweeping Russian energy sanctions legislation on Tuesday as Ukrainian President Volodymyr Zelenskiy visits the Capitol, seeing the vote as a tribute to the bill's author, the late Senator Lindsey Graham, on the day of his funeral.Graham was among Kyiv's most influential and outspoken allies in Congress in its four-year-old war against Russia, and the bill aims to increase economic pressure on Moscow over its invasion of Ukraine.

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.