Ukrainian President Volodymyr Zelensky has welcomed to Kyiv a congressional delegation led by Senate Minority Leader Mitch McConnell.
Zelensky said on his Instagram account that the visit "is a strong signal of bipartisan support for Ukraine from the United States Congress and the American people."
He added: "Thank you for your leadership in helping us in our struggle not only for our country, but also for democratic values and freedoms. We really appreciate it."
Republican Sens. Susan Collins of Maine, John Barrasso of Wyoming and John Cornyn of Texas were also seen meeting Zelensky in video and photos posted to the Ukrainian president's social media accounts.
It's unclear whether the meeting took place Saturday and whether the delegation is still in the Ukrainian capital.
McConnell and the other senators are the latest US officials to visit Ukraine since Russia invaded the eastern European nation in late February. Two weeks ago, House Speaker Nancy Pelosi led the first congressional delegation to Ukraine since war broke out. Pelosi, joined by several senior House Democrats, met with Zelensky in Kyiv.
Congress has been in the process of trying to pass a roughly $40 billion aid bill that would provide Ukraine with military and humanitarian assistance. In a rare show of unity, McConnell and Senate Majority Leader Chuck Schumer pushed for swift passage of the bill this week, after the House had advanced the measure in a bipartisan vote. That Senate effort, however, was blocked Thursday by GOP Sen. Rand Paul of Kentucky who has demanded changes to the legislation. The Senate is now expected to pass the bill sometime next week, with Schumer forced to take procedural steps to overcome Paul's objection, before sending it to President Joe Biden's desk.
This story has been updated with additional details.