Trump says border wall material shouldn’t be sold despite congressional requirement - The Washington Post

President-elect Donald Trump said Monday that President Joe Biden should stop selling unused border wall material, calling it "almost a criminal act" — even though Congress required its disposal in bipartisan legislation last year… 

Because it is now mostly rusted useless junk.

https://www.washingtonpost.com/politics/2024/12/16/trump-border-wall-material/