This also as GOP support to Kiev has generally been seen as waning in enthusiasm of late.

"Mr. McCarthy, he has to come here to see how we work, what's happening here.... Then after that, make your assumptions," Zelensky said in a CNN interview which aired Wednesday.

He continued, "Mr. McCarthy, he has to come here to see how we work, what's happening here, what war caused us, which people are fighting now, who are fighting now. And then after that, make your assumptions," in words given to Wolf Blitzer. "I think that Speaker McCarthy, he never visited Kyiv or Ukraine, and I think it would help him with his position," Zelensky emphasized.

But the GOP leader told the same outlet that he doesn't need to travel to Ukraine to gain information, saying, "I will continue to get my briefings and others, but I don't have to go to Ukraine or Kyiv to see it."

Greater skepticism over Biden's Ukraine aid policy has been on the rise among Republican Congressional members, also reflective of their base according to polls, with McCarthy having taken a stand against "a blank check" approach to arming and assisting Ukraine. 

McCarthy's rejection of the Ukrainian president's invitation included a firm reiteration of his position on the unprecedented foreign aid: 

"Let's be very clear about what I said: no blank checks, OK? So, from that perspective, I don't have to go to Ukraine to understand where there's a blank check or not," McCarthy told CNN. "I will continue to get my briefings and others, but I don't have to go to Ukraine or Kyiv to see it. And my point has always been, I won't provide a blank check for anything."