House GOP leaders are sticking to the line that there can be no aid for Ukraine without a vigorous new effort to secure America’s border following a record of number of migrant encounters late last year. There’s no doubt there is a border crisis. But Trump and House Republicans combined to kill off a bipartisan Senate compromise that would have produced the most conservative enforcement reforms in years – apparently because the ex-president wanted to deprive Biden of an election-year victory.

But the GOP message is a unifying force in the party. “So many citizens are saying, we are we sending billions of dollars to protect Ukraine while we our country remains open,” Rep. Byron Donalds of Florida, a Trump ally, said on NBC’s “Meet the Press” on Sunday.

Heat from overseas

Johnson is coming under massive heat from Zelensky, who is increasingly desperate given increasing doubts about his capacity to resist Putin’s forces over the long term. The Ukrainian president noted in the CNN interview that the speaker had previously assured him of support. “What can I do? I can’t push the speaker. This is his decision. But I think he understands all the challenges, what we have,” Zelensky said.

“I have to trust. But we will see.”

Johnson is also facing intense lobbying from leading voices of the Western alliance. In the United States in December, British Foreign Secretary David Cameron met the speaker and told CNN that Washington was a lynchpin for the entire war effort and that the money would make a “huge difference.” He has continued his advocacy for the package ever since, earning the ire of one of Trump’s top backers in the House, Rep. Marjorie Taylor Greene of Georgia, who said that the British Lord could “kiss my a**.”

Other friends of the United States are warning Johnson of a catastrophic blow to US prestige and power abroad if the package isn’t passed. Polish Foreign Minister Radoslaw Sikorski implored Johnson to consider the consequences of further delaying Ukraine’s US lifeline. “I would say, Mr. Speaker, it is the fate of Ukraine, it is the tortured people of Ukraine that beg you, but it is also the credibility of your country that is at stake,” Sikorski told CNN’s “Fareed Zakaria GPS” on Sunday. The minister noted that Biden traveled to Kyiv last year and put US credibility on the line, adding, “The word of the United States has been spoken. It needs to be followed up with action.”

Democratic Rep. Seth Moulton of Massachusetts told CNN on Monday, after returning from a trip to Asia, that US allies were watching Johnson’s moves closely because what he does next will influence other US adversaries.

“It was amazing. The officials in both Taiwan and Japan were supremely focused on whether or not we would deliver aid to Ukraine because of the message that that sends to Xi Jinping in China, someone, a dictator, who has said that he wants to invade Taiwan,” Moulton said on “CNN News Central.”

If persuasion doesn’t sway Johnson, the pressure of events might. Already, Ukrainian and US officials are warning that a paucity of ammunition is causing losses of territory and increasing casualties. If the outgunned Ukrainians suffer a string of battlefield defeats – and Putin’s forces advance – the speaker and his Republican majority could be blamed for a crisis that could threaten NATO and increase the chances of the hostilities involving American troops.

“If the US doesn’t provide military assistance, soon, we are going to start to see the Russians make significant gains,” American Enterprise Institute scholar Frederick Kagan said Monday. “If we don’t provide any more assistance at all, it’s very possible that you will end up seeing the front line start to move very rapidly toward the west by the end of this year.”

Johnson’s conundrum is rooted in treacherous domestic politics but has profound international implications. And there’s no sign he knows how to solve it.