The decision left officials on both sides of the Atlantic scrambling to find out how long the pause might last.

While there is no direct evidence that the Ukraine weapons freeze caused the bill’s failure, social media users, including analysts, speculated that Brian Fitzpatrick might be opposing the bill due to his frustration with the weapons decision. Read More: Bill Beautiful Bill House vote: What happens if there's a tie? Can Mike Johnson pass the bill?

The White House cited Pentagon concerns that some American arms stockpiles were dwindling too low. Among the affected weapons were air defense systems, bombs, missiles and artillery rounds.