Chinese President Xi Jinping, right, and Russian President Vladimir Putin look toward each other as they shake hands prior to their talks in Beijing on Thursday, May 16, 2024. (Sergei Bobylev, Sputnik, Kremlin Pool Photo via AP, File)

However, China is not the only concern some in the GOP have floated when it comes to continued Ukrainian support. 

Concerns over U.S. border security and the massive debt Washington faces have also been routinely cited as major issues, prompting some to opt out of supporting Kyiv.

“Securing the border is primarily an issue of willpower, not a $$$ problem,” Pence said, claiming that Putin in the past has “weaponized refugees” and he could do it again if he isn’t stopped in Ukraine. 

“While there’s no question that the federal government has a massive overspending problem, lethal aid to Ukraine has been worth every penny,” he said.

Former Vice President Mike Pence speaks during an event to promote his new book at the conservative Heritage Foundation think tank on Oct. 19, 2022 in Washington, D.C. (Chip Somodevilla/Getty Images)

The memo pointed out that the U.S. has used just 1.5 % of its federal budget to defend Ukraine and to “degrad[e] the Russian military from the second best in the world to the second best in Ukraine.”

“The cost of a Russian attack on a NATO ally, who we are treaty-bound to defend, would quickly exceed 1.5% of the federal budget,” he added. “It is in America’s best interests for Ukraine to win the war.”