President Donald Trump on Thursday threatened to kill any infrastructure legislation lawmakers might pass next year unless Democrats give him billions for his proposed southern border wall.

Notably, Trump did not threaten to veto a stopgap spending measure headed to his desk later Thursday that was made necessary by his demand for $5 billion for the barrier project this fiscal year. Lawmakers could not find a way to meet that demand — or part of it — ahead of a Friday night deadline, so they decided to put off the border wall fight until February.

But he did make clear he will continue to push for the wall funding when the next Congress convenes after a holiday break that will start for lawmakers Thursday and him on Friday.

[Senate Passes Government Funding Stopgap, Punts on Lands Issue]

“The Democrats, who know Steel Slats (Wall) are necessary for Border Security, are putting politics over Country. What they are just beginning to realize is that I will not sign any of their legislation, including infrastructure, unless it has perfect Border Security. U.S.A. WINS!” he wrote in a tweet.