text:  Live from NPR News in Washington, I'm Jack Spear. Ukrainian President Volodymyr Zelensky is meeting with top congressional leaders on Capitol Hill. As NPR's Barbara Sprunt reports, it comes as NATO leaders gather in Washington with support for Ukraine, a focus of the summit. Zelensky met with a bipartisan delegation, including Senate Majority Leader Chuck Schumer and Minority Leader Mitch McConnell, as well as House Speaker Mike Johnson. He told reporters he's invited the speaker to Kiev. Here's Johnson's reaction.