Trump built 49 miles of new wall, and refurbished another 406.
The total length of the U.S. - Mexico border is 1951 miles.
https://en.wikipedia.org/wiki/Trump_wall
An unpublished memo from the U.S. Customs and Border Protection leaked in March 2022 revealed that the "impenetrable" border wall had been breached more than 3,200 times by the time Trump left office in 2021.
